Encyclopedia of Science Canned Food (Space Edition)
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Description
Book Introduction
- A word from MD
- [Complete Space Knowledge] 365 delightful pieces of space knowledge, one page a day! This book easily explains the questions you've always wondered while looking up at the night sky, like "How did Earth come to be?" and "Is there an end to the universe?"
Even if you don't have professional scientific knowledge, it's delivered in a fun way that will help you increase your knowledge of space science with just one read.
- Hyunjae Ahn, PD of Natural Sciences
Author of the best-selling book "Fun Chemistry Stories You'll Read All Night"
Written with great care by Takeo Samaki and 17 top experts
365 fun science facts, one page a day!
『Science Encyclopedia Canned - Space Edition』 has a format that organizes '1 page per day, 365 days, 365 items' in a clear manner, so that anyone can read it with ease and accumulate knowledge. In addition, since it clearly organizes all items into three categories with the subtitle 'If you know just three things, I can be a scientist!', even readers without much scientific knowledge can easily remember the content and organize it in their heads after reading it just once.
This book is a very smart and informative book that anyone, regardless of age, can enjoy and increase their scientific knowledge with, even if they weren't good at science in school, but have looked up at the night sky and wondered at least once, "How did the sun, the moon, the stars, and the Earth come into being?", "Is there an end to the universe?", or "How many stars are there in the universe?"
Moreover, as can be seen from the fact that many of the authors of this book are science teachers in elementary, middle, and high schools, or professors or lecturers who teach students at universities, it has a high degree of 'curriculum relevance' and is suitable as a kind of science supplementary textbook for young readers.
Written with great care by Takeo Samaki and 17 top experts
365 fun science facts, one page a day!
『Science Encyclopedia Canned - Space Edition』 has a format that organizes '1 page per day, 365 days, 365 items' in a clear manner, so that anyone can read it with ease and accumulate knowledge. In addition, since it clearly organizes all items into three categories with the subtitle 'If you know just three things, I can be a scientist!', even readers without much scientific knowledge can easily remember the content and organize it in their heads after reading it just once.
This book is a very smart and informative book that anyone, regardless of age, can enjoy and increase their scientific knowledge with, even if they weren't good at science in school, but have looked up at the night sky and wondered at least once, "How did the sun, the moon, the stars, and the Earth come into being?", "Is there an end to the universe?", or "How many stars are there in the universe?"
Moreover, as can be seen from the fact that many of the authors of this book are science teachers in elementary, middle, and high schools, or professors or lecturers who teach students at universities, it has a high degree of 'curriculum relevance' and is suitable as a kind of science supplementary textbook for young readers.
- You can preview some of the book's contents.
Preview
index
Star│Stars of the night sky
Day 001 How can I see stars without any tools? ｜ Day 002 What stars are in the spring night sky? ｜ Day 003 What stars are in the summer night sky? ｜ Day 004 What stars are in the fall night sky? ｜ Day 005 What stars are in the winter night sky? ｜ Day 006 Can I see the constellations in the northern sky all year round? ｜ Day 007 Will stars appear larger if I use binoculars?
Space│Telescope Observation
Day 008 Who invented the telescope? ｜ Day 009 Who was the first person to observe the night sky with a telescope? ｜ Day 010 Why can't we look at the sun with a telescope? ｜ Day 011 What is the structure and principle of a refracting telescope? ｜ Day 012 What is the structure and principle of a reflecting telescope? ｜ Day 013 How can we take a picture of the moon with a smartphone? ｜ Day 014 Can we take pictures of stars without a telescope? ｜
Earth│Geocentrism and Heliocentrism
Day 015 How did we know the Earth was round? ｜ Day 016 What is geocentrism? ｜ Day 017 What is Copernicus' heliocentric theory? ｜ Day 018 How was the heliocentric theory suppressed? ｜ Day 019 What criticism was the heliocentric theory received? ｜ Day 020 Was Galileo convinced of the heliocentric theory? ｜ Day 021 How was the heliocentric theory accepted?
Planets│Planetary Structure
Day 022 What is a planet? ｜ Day 023 How were planets born? ｜ Day 024 What is the difference between a planet, a satellite, and a star? ｜ Day 025 Is Mercury the closest to Earth? ｜ Day 026 How many exoplanets have been discovered so far? ｜ Day 027 Can a planet become a star? ｜ Day 028 What is an asteroid?
Sun│Characteristics of the Sun
Day 029 When and how was the sun born? ｜ Day 030 What is the sun made of? ｜ Day 031 What is the temperature of the sun? ｜ Day 032 How big is the sun? ｜ Day 033 What is the mass of the sun? ｜ Day 034 Does the sun rotate? ｜ Day 035 Does the sun have a magnetic field?
Moon│The Structure of the Moon
Day 036 How was the moon born? ｜ Day 037 How big is the moon? ｜ Day 038 What does the inside of the moon look like? ｜ Day 039 Does the moon have air? ｜ Day 040 What is the temperature of the moon? ｜ Day 041 How were lunar craters formed? ｜ Day 042 How big is the largest crater on the moon? ｜ Day 043 What are the patterns on the moon's surface?
Space Development│Planetary Exploration
Day 044 How can we explore the moon and planets? ｜ Day 045 Where did the first space probe land? ｜ Day 046 What did the Mars probe discover? ｜ Day 047 What did the Venus probe discover? ｜ Day 048 What did the Jupiter probe discover? ｜ Day 049 What did the Saturn probe discover? ｜ Day 050 Can we explore the edges of the solar system?
Galaxies│Nebulae and Clusters
Day 051 What is a nebula? ｜ Day 052 What is a star cluster? ｜ Day 053 What is the difference between a nebula and a galaxy, and a star cluster and a galaxy? ｜ Day 054 What is a nebula formed from the remnants of a supernova? ｜ Day 055 Why are nebulae named with the letter M? ｜ Day 056 Can nebulae and star clusters be seen with the naked eye? ｜ Day 057 Are there nebulae that cannot be seen with the naked eye?
Star│Constellation
Day 058 When and where did constellations originate? ｜ Day 059 How many constellations are there? ｜ Day 060 Can you see the 12 signs of the zodiac around your birthday? ｜ Day 061 Why do constellations change with the seasons? ｜ Day 062 Why do constellations in the night sky differ from country to country? ｜ Day 063 Do constellations become disordered? ｜ Day 064 What is the Milky Way?
Space│Space Observation
Day 065 What did the moon look like to Galileo? ｜ Day 066 How do we explore space? ｜ Day 067 How do we obtain information with a telescope? ｜ Day 068 How do we observe with a ground-based telescope? ｜ Day 069 How far can we see with a telescope? ｜ Day 070 Can we observe even invisible light? ｜ Day 071 What did the Hubble Space Telescope discover?
Earth│The Earth's Rotation
Day 072 How does the Earth rotate? ｜ Day 073 Is there a relationship between the direction of the Earth's axis and its rotation? ｜ Day 074 Can the direction of the Earth's axis change? ｜ Day 075 What is the evidence that the Earth rotates? ｜ Day 076 Why do we assume that the celestial sphere exists? ｜ Day 077 What is diurnal motion? ｜ Day 078 Why do westerly winds blow?
Planets│The Mystery of the Planets
Day 079 Why don't Saturn's rings come off? ｜ Day 080 Are there any other planets with rings besides Saturn? ｜ Day 081 Why isn't Pluto a planet? ｜ Day 082 What is the relationship between planet names and mythology? ｜ Day 083 What planets can be seen from Earth? ｜ Day 084 Why do satellites orbit planets? ｜ Day 085 Does every planet have a satellite?
The Sun│Inside the Sun
Day 086 What are the sunspots on the surface of the sun? ｜ Day 087 What does the inside of the sun look like? ｜ Day 088 What reactions occur on the sun? ｜ Day 089 How long does the sun live? ｜ Day 090 What is a prominence? ｜ Day 091 What are the chromosphere and flares? ｜ Day 092 What is the corona?
Star│Mystery of the Stars
Day 093 How do planets move? ｜ Day 094 How can we distinguish between planets and stars? ｜ Day 095 Why can't we see stars during the day? ｜ Day 096 Are the movements of stars the same in the northern and southern sky? ｜ Day 097 Why are there red stars and blue stars? ｜ Day 098 Why is the night sky dark when there are so many stars?
Space Development│Rockets of the World
Day 099 How is space development progressing? ｜ Day 100 What was the first pencil rocket? ｜ Day 101 What is a Kappa rocket? ｜ Day 102 What is an MV rocket? ｜ Day 103 How is large rocket development progressing? ｜ Day 104 What is the H-ⅡA rocket? ｜ Day 105 What is a period rocket?
Earth│The relationship between the Earth and the stars
Day 106 What are the characteristics of the Earth's orbit? ｜ Day 107 What is the stellar rotation? ｜ Day 108 What is the zodiac? ｜ Day 109 What are the 12 signs of the zodiac? ｜ Day 110 Is there a relationship between astrology and the 12 signs of the zodiac? ｜ Day 111 Why is January the coldest month? ｜ Day 112 What is the relationship between seasons and rotation and revolution? ｜
Star│Meteor
Day 113 What are meteors made of? ｜ Day 114 Where do meteors come from? ｜ Day 115 Do meteors have colors? ｜ Day 116 How long does it take for a meteor to fall? ｜ Day 117 Why do meteor showers occur? ｜ Day 118 How can we see meteor showers every year? ｜ Day 119 How many meteor showers are there?
Universe│Elements and Matter of the Universe
Day 120 What type of atom is most abundant in the universe? ｜ Day 121 Where did iron atoms come from? ｜ Day 122 Where did gold atoms come from? ｜ Day 123 What types of atoms made up the Earth? ｜ Day 124 What types of atoms are in the human body? ｜ Day 125 What is dark matter? ｜ Day 126 What is dark energy?
Earth│The Birth of the Earth
Day 127 When was the Earth born? ｜ Day 128 What is a magma ocean? ｜ Day 129 What is a snowball Earth? ｜ Day 130 What does the inside of the Earth look like? ｜ Day 131 How can we explore the inside of the Earth? ｜ Day 132 What are the radius and diameter of the Earth? ｜ Day 133 Is the Earth really round?
Planets│The Birth of the Solar System
Day 134 When was the solar system born? ｜ Day 135 How was the solar system born? ｜ Day 136 How many planets are there in the solar system? ｜ Day 137 What are the characteristics of terrestrial planets? ｜ Day 138 What are the characteristics of Jovian planets? ｜ Day 139 How big is the solar system? ｜ Day 140 Where is the solar system located?
Sun│Solar energy
Day 141 How far is the Earth from the Sun? ｜ Day 142 How much energy does the Sun have? ｜ Day 143 How is solar energy transmitted to the Earth? ｜ Day 144 What is solar energy used for? ｜ Day 145 When is the Sun most active? ｜ Day 146 What effect does the solar wind have on the Earth? ｜ Day 147 What is the identity of ultraviolet rays that are harmful to living things?
Moon│Moon and Earth
Day 148 What would happen to the Earth if the moon disappeared? ｜ Day 149 How far is the moon from the Earth? ｜ Day 150 How do we calculate a year based on the moon? ｜ Day 151 Can we tell the date by looking at the moon? ｜ Day 152 Does the moon look the same everywhere at the same time? ｜ Day 153 Why is it difficult to see the moon during the day? ｜ Day 154 Which part of the moon is visible from Earth?
Space Development│Satellite
Day 155 What was the first artificial satellite? ｜ Day 156 What do the Halley Fleet satellites do? ｜ Day 157 What do meteorological satellites do? ｜ Day 158 What are X-ray astronomy satellites? ｜ Day 159 What do Earth observation satellites do? ｜ Day 160 What does Hayabusa do? ｜ Day 161 What does Hayabusa 2 do?
Galaxy│Structure of the Galaxy
Day 162 What is a galaxy? ｜ Day 163 How big is a galaxy? ｜ Day 164 What does a galaxy look like? ｜ Day 165 How many galaxies are there in the universe? ｜ Day 166 Who named galaxies? ｜ Day 167 What is the difference between a galaxy group and a galaxy cluster? ｜ Day 168 What is the structure of the universe?
Star│Comet
Day 169 What is the difference between a comet and a meteor? ｜ Day 170 What are comets made of? ｜ Day 171 Why do comets have tails? ｜ Day 172 Can we see comets with the naked eye? ｜ Day 173 How do we discover new comets? ｜ Day 174 Where do comets come from? ｜ Day 175 Did life really originate from a comet?
Space│Black Hole
Day 176 What is a black hole? ｜ Day 177 Where is a black hole? ｜ Day 178 What does the inside of a black hole look like? ｜ Day 179 Is it really impossible to escape a black hole? ｜ Day 180 How were black holes discovered? ｜ Day 181 How can we observe a black hole? ｜ Day 182 What is a galactic nucleus?
Earth│A planet with life
Day 183 Can we find traces of the oldest living organisms? ｜ Day 184 How did living organisms emerge? ｜ Day 185 How did living organisms advance onto land? ｜ Day 186 When did multicellular organisms appear? ｜ Day 187 What was the first organism to land on land? ｜ Day 188 When did humans appear? ｜ Day 189 What is an ecosystem?
Planets│Mysteries of the Solar System
Day 190 What is the largest planet in the solar system? ｜ Day 191 Does the orbital period get shorter the closer a planet is to the sun? ｜ Day 192 Why do humans search for habitable planets? ｜ Day 193 Why are the planets named Mercury, Mars, and Jupiter? ｜ Day 194 What is the connection between the names of the planets and the days of the week? ｜ Day 195 What else does the solar system consist of besides planets? ｜ Day 196 Is there only one solar system in the universe?
Solar and lunar eclipses
Day 197 How does a solar eclipse occur? ｜ Day 198 What types of solar eclipses are there? ｜ Day 199 What happens when the moon covers the sun? ｜ Day 200 How does a lunar eclipse occur? ｜ Day 201 Why does a blood moon occur? ｜ Day 202 How can you tell when a solar eclipse is coming? ｜ Day 203 Which is more common, a solar eclipse or a lunar eclipse?
Moon│Phases and Revolution of the Moon
Day 204 Why does the moon look like the sun? ｜ Day 205 Why does the moon look round even on the third day of the lunar month? ｜ Day 206 Why do the phases of the moon occur? ｜ Day 207 Can we only see the full moon once a month? ｜ Day 208 Why does the full moon appear higher in winter? ｜ Day 209 What is the moon's orbital speed? ｜ Day 210 How far is the moon moving away from the Earth?
Space Development│Space Development Technology
Day 211 Which countries are actively developing space? ｜ Day 212 What is the International Space Station? ｜ Day 213 Can we see the International Space Station with the naked eye? ｜ Day 214 What kind of people live on the ISS? ｜ Day 215 What kind of clocks are used on the ISS? ｜ Day 216 Is it possible to build a space hotel?
Galaxy│Milky Way
Day 217 How did we know the identity of the Milky Way? ｜ Day 218 How big is our galaxy? ｜ Day 219 Why is our galaxy shaped like a spiral? ｜ Day 220 How many stars are there in our galaxy? ｜ Day 221 What does our galaxy look like? ｜ Day 222 Where is the Andromeda galaxy? ｜ Day 223 What happens when galaxies collide?
Star│Planetary Projection Hall
Day 224 Where did the name planetarium come from? ｜ Day 225 When did planetariums begin? ｜ Day 226 What is the structure of a planetarium? ｜ Day 227 Do planetariums show the same number of stars as real stars? ｜ Day 228 What is a hand-operated planetarium? ｜ Day 229 Is there a planetarium without a projector in the center? ｜ Day 230 How do you make a planetarium with a glowing ceiling?
Universe│The moment of the universe's birth
Day 231 What happened during the Big Bang? ｜ Day 232 Is there evidence that the Big Bang occurred? ｜ Day 233 What is the theory of inflation? ｜ Day 234 What is the evidence that inflation occurred? ｜ Day 235 Where did inflation start? ｜ Day 236 What does the outside of the universe look like? ｜ Day 237 How have humans perceived the universe?
Space Development│The Future of Space Development
Day 238 How did we learn about space? ｜ Day 239 What does NASA do in space? ｜ Day 240 What is the plan to colonize Mars? ｜ Day 241 What is an orbital elevator? ｜ Day 242 Is our daily life related to space? ｜ Day 243 What are neutrinos? ｜ Day 244 What can we learn from neutrinos?
Earth│Characteristics of the Earth
Day 245 Why is Earth called the 'water planet'? ｜ Day 246 Where did Earth's water come from? ｜ Day 247 Has the composition of seawater changed? ｜ Day 248 What was the state of the ice age like? ｜ Day 249 What does 'glacier' mean in the ice age? ｜ Day 250 When will the next ice age occur? ｜ Day 251 Is life only on Earth?
Planets│Planetary atmospheres and temperatures
Day 252 Is Mercury hot? ｜ Day 253 What are the clouds on Venus made of? ｜ Day 254 Is Jupiter made of only gas? ｜ Day 255 What are Jupiter's stripes? ｜ Day 256 Why are Uranus and Neptune blue? ｜ Day 257 Does Neptune have oceans? ｜ Day 258 Why does Venus rotate counterclockwise from Earth?
Sun│Aurora
Day 259 What is the Aurora? ｜ Day 260 Why do the Aurora appear? ｜ Day 261 What are the Aurora made of? ｜ Day 262 Why do the Aurora change color? ｜ Day 263 Where can I see the Aurora? ｜ Day 264 Can I see the Aurora in Japan? ｜ Day 265 What does the Aurora look like from space?
Moon│Lunar exploration
Day 266 Can we build a lunar base? ｜ Day 267 Who was the first person to land on the moon? ｜ Day 268 How do we determine the exploration point? ｜ Day 269 Why did astronauts go to the moon? ｜ Day 270 What does the Earth look like from the moon? ｜ Day 271 What did we discover from lunar exploration? ｜ Day 272 What was the mission of the lunar probe 'Kaguya'?
Earth│Earth's Magnetism
Day 273 Why do magnetic compasses point to the north? ｜ Day 274 How was the mystery of Earth's magnetism solved? ｜ Day 275 Is it true that the North and South Poles do not completely coincide? ｜ Day 276 Can the Earth's South and North Poles be reversed? ｜ Day 277 What is the geological era called the Chiba Period? ｜ Day 278 Is it true that the theory of continental drift has been revived? ｜ Day 279 Why does Earth have a magnet?
Star│Meteorite
Day 280 What is a meteorite? ｜ Day 281 What are meteorites made of? ｜ Day 282 Where do meteorites come from? ｜ Day 283 What is a crater? ｜ Day 284 Do meteorites only fall to Earth? ｜ Day 285 What happens when a giant meteorite falls? ｜ Day 286 What is the largest meteorite to have ever fallen to Earth?
Space Development│Space Flight
Day 287 Who was the first to successfully fly into space, and when? ｜ Day 288 What did Gagarin say immediately after the first successful space flight? ｜ Day 289 What do astronauts do? ｜ Day 290 How can I become an astronaut? ｜ Day 291 What functions does a spacesuit have? ｜ Day 292 Why do we need to wear spacesuits? ｜ Day 293 Why are spacesuits orange?
Universe│Theories for Understanding the Universe
Day 294 How many stars are born each day? ｜ Day 295 How will the universe end? ｜ Day 296 Will the universe contract again? ｜ Day 297 What is the Big Bounce Theory? ｜ Day 298 Why do particles and antiparticles arise symmetrically? ｜ Day 299 What is a matter and antimatter universe? ｜ Day 300 What can we learn from the theory of relativity?
Earth│Earth's Continents
Day 301 Where is the deepest hole dug in the ground? ｜ Day 302 What plates cover the Earth? ｜ Day 303 Do continents really move? ｜ Day 304 Were there once only one continent? ｜ Day 305 Are there impact craters on Earth? ｜ Day 306 How are rocks formed? ｜ Day 307 How is soil formed?
Planets│New Discovery of Planets
Day 308 Why is Mercury's surface full of impact craters? ｜ Day 309 Why are Venus and Earth different sizes? ｜ Day 310 Why does Mars look reddish? ｜ Day 311 Is it true that there is water on Mars? ｜ Day 312 Does Mars really have the largest volcano in the solar system? ｜ Day 313 How many moons does Jupiter have? ｜ Day 314 What are the surfaces of Jupiter's moons like?
Star│Astronomy
Day 315 What are first-magnitude and second-magnitude stars? ｜ Day 316 What is absolute magnitude? ｜ Day 317 What determines the brightness of a star? ｜ Day 318 How do we measure the distance to the moon? ｜ Day 319 What is an astronomical unit? ｜ Day 320 What is a parsec? ｜ Day 321 What is a light-year?
Earth│Sea
Day 322 Why do tides occur? ｜ Day 323 Why do waves form? ｜ Day 324 How much water is there in the ocean? ｜ Day 325 Where is the deepest ocean? ｜ Day 326 Did life really originate in the ocean? ｜ Day 327 What are submarine hydrothermal vents? ｜ Day 328 How does seawater move?
Space│Life Beyond Earth
Day 329 Are there Martians on Mars? ｜ Day 330 Is there other life in the solar system? ｜ Day 331 What is the 'habitable zone'? ｜ Day 332 Which star has the highest possibility of supporting life? ｜ Day 333 What is the Drake equation? ｜ Day 334 What is the search for extraterrestrial intelligence? ｜ Day 335 Has a message been sent outside the solar system? ｜ Day 336 What is a UFO? ｜ Day 337 Can a spaceship come to Earth?
Space Development│Life in Space
Day 338 Why do astronauts eat space food? ｜ Day 339 How do they make space food? ｜ Day 340 How do they transport space food? ｜ Day 341 How do they get water on the ISS? ｜ Day 342 Can you take a bath in space? ｜ Day 343 How do you use the toilet in space? ｜ Day 344 Is it true that your muscles become weaker in space?
Star│The Mystery of the Stars
Day 345 How long does the sun live? ｜ Day 346 What is the lifespan of a planet larger than the sun? ｜ Day 347 What is a supernova explosion? ｜ Day 348 How far is a star from Earth? ｜ Day 349 Is there a star made of diamonds? ｜ Day 350 Can we name stars? ｜ Day 351 What does Arabic have to do with star names?
Earth│Atmosphere
Day 352 What is the Earth's atmosphere like? ｜ Day 353 What is air made of? ｜ Day 354 When did oxygen on Earth come into existence? ｜ Day 355 Why doesn't air run out? ｜ Day 356 Why is the air thin at the top of mountains? ｜ Day 357 What are greenhouse gases? ｜ Day 358 What is global warming?
Space Development│Rockets
Day 359 When were rockets first developed? ｜ Day 360 How do rockets fly? ｜ Day 361 How far can rockets fly? ｜ Day 362 What kind of fuel do rockets use? ｜ Day 363 Why do we launch so many satellites? ｜ Day 364 Why are rocket launches so difficult? ｜ Day 365 What is a swing-by? ｜
Search
Day 001 How can I see stars without any tools? ｜ Day 002 What stars are in the spring night sky? ｜ Day 003 What stars are in the summer night sky? ｜ Day 004 What stars are in the fall night sky? ｜ Day 005 What stars are in the winter night sky? ｜ Day 006 Can I see the constellations in the northern sky all year round? ｜ Day 007 Will stars appear larger if I use binoculars?
Space│Telescope Observation
Day 008 Who invented the telescope? ｜ Day 009 Who was the first person to observe the night sky with a telescope? ｜ Day 010 Why can't we look at the sun with a telescope? ｜ Day 011 What is the structure and principle of a refracting telescope? ｜ Day 012 What is the structure and principle of a reflecting telescope? ｜ Day 013 How can we take a picture of the moon with a smartphone? ｜ Day 014 Can we take pictures of stars without a telescope? ｜
Earth│Geocentrism and Heliocentrism
Day 015 How did we know the Earth was round? ｜ Day 016 What is geocentrism? ｜ Day 017 What is Copernicus' heliocentric theory? ｜ Day 018 How was the heliocentric theory suppressed? ｜ Day 019 What criticism was the heliocentric theory received? ｜ Day 020 Was Galileo convinced of the heliocentric theory? ｜ Day 021 How was the heliocentric theory accepted?
Planets│Planetary Structure
Day 022 What is a planet? ｜ Day 023 How were planets born? ｜ Day 024 What is the difference between a planet, a satellite, and a star? ｜ Day 025 Is Mercury the closest to Earth? ｜ Day 026 How many exoplanets have been discovered so far? ｜ Day 027 Can a planet become a star? ｜ Day 028 What is an asteroid?
Sun│Characteristics of the Sun
Day 029 When and how was the sun born? ｜ Day 030 What is the sun made of? ｜ Day 031 What is the temperature of the sun? ｜ Day 032 How big is the sun? ｜ Day 033 What is the mass of the sun? ｜ Day 034 Does the sun rotate? ｜ Day 035 Does the sun have a magnetic field?
Moon│The Structure of the Moon
Day 036 How was the moon born? ｜ Day 037 How big is the moon? ｜ Day 038 What does the inside of the moon look like? ｜ Day 039 Does the moon have air? ｜ Day 040 What is the temperature of the moon? ｜ Day 041 How were lunar craters formed? ｜ Day 042 How big is the largest crater on the moon? ｜ Day 043 What are the patterns on the moon's surface?
Space Development│Planetary Exploration
Day 044 How can we explore the moon and planets? ｜ Day 045 Where did the first space probe land? ｜ Day 046 What did the Mars probe discover? ｜ Day 047 What did the Venus probe discover? ｜ Day 048 What did the Jupiter probe discover? ｜ Day 049 What did the Saturn probe discover? ｜ Day 050 Can we explore the edges of the solar system?
Galaxies│Nebulae and Clusters
Day 051 What is a nebula? ｜ Day 052 What is a star cluster? ｜ Day 053 What is the difference between a nebula and a galaxy, and a star cluster and a galaxy? ｜ Day 054 What is a nebula formed from the remnants of a supernova? ｜ Day 055 Why are nebulae named with the letter M? ｜ Day 056 Can nebulae and star clusters be seen with the naked eye? ｜ Day 057 Are there nebulae that cannot be seen with the naked eye?
Star│Constellation
Day 058 When and where did constellations originate? ｜ Day 059 How many constellations are there? ｜ Day 060 Can you see the 12 signs of the zodiac around your birthday? ｜ Day 061 Why do constellations change with the seasons? ｜ Day 062 Why do constellations in the night sky differ from country to country? ｜ Day 063 Do constellations become disordered? ｜ Day 064 What is the Milky Way?
Space│Space Observation
Day 065 What did the moon look like to Galileo? ｜ Day 066 How do we explore space? ｜ Day 067 How do we obtain information with a telescope? ｜ Day 068 How do we observe with a ground-based telescope? ｜ Day 069 How far can we see with a telescope? ｜ Day 070 Can we observe even invisible light? ｜ Day 071 What did the Hubble Space Telescope discover?
Earth│The Earth's Rotation
Day 072 How does the Earth rotate? ｜ Day 073 Is there a relationship between the direction of the Earth's axis and its rotation? ｜ Day 074 Can the direction of the Earth's axis change? ｜ Day 075 What is the evidence that the Earth rotates? ｜ Day 076 Why do we assume that the celestial sphere exists? ｜ Day 077 What is diurnal motion? ｜ Day 078 Why do westerly winds blow?
Planets│The Mystery of the Planets
Day 079 Why don't Saturn's rings come off? ｜ Day 080 Are there any other planets with rings besides Saturn? ｜ Day 081 Why isn't Pluto a planet? ｜ Day 082 What is the relationship between planet names and mythology? ｜ Day 083 What planets can be seen from Earth? ｜ Day 084 Why do satellites orbit planets? ｜ Day 085 Does every planet have a satellite?
The Sun│Inside the Sun
Day 086 What are the sunspots on the surface of the sun? ｜ Day 087 What does the inside of the sun look like? ｜ Day 088 What reactions occur on the sun? ｜ Day 089 How long does the sun live? ｜ Day 090 What is a prominence? ｜ Day 091 What are the chromosphere and flares? ｜ Day 092 What is the corona?
Star│Mystery of the Stars
Day 093 How do planets move? ｜ Day 094 How can we distinguish between planets and stars? ｜ Day 095 Why can't we see stars during the day? ｜ Day 096 Are the movements of stars the same in the northern and southern sky? ｜ Day 097 Why are there red stars and blue stars? ｜ Day 098 Why is the night sky dark when there are so many stars?
Space Development│Rockets of the World
Day 099 How is space development progressing? ｜ Day 100 What was the first pencil rocket? ｜ Day 101 What is a Kappa rocket? ｜ Day 102 What is an MV rocket? ｜ Day 103 How is large rocket development progressing? ｜ Day 104 What is the H-ⅡA rocket? ｜ Day 105 What is a period rocket?
Earth│The relationship between the Earth and the stars
Day 106 What are the characteristics of the Earth's orbit? ｜ Day 107 What is the stellar rotation? ｜ Day 108 What is the zodiac? ｜ Day 109 What are the 12 signs of the zodiac? ｜ Day 110 Is there a relationship between astrology and the 12 signs of the zodiac? ｜ Day 111 Why is January the coldest month? ｜ Day 112 What is the relationship between seasons and rotation and revolution? ｜
Star│Meteor
Day 113 What are meteors made of? ｜ Day 114 Where do meteors come from? ｜ Day 115 Do meteors have colors? ｜ Day 116 How long does it take for a meteor to fall? ｜ Day 117 Why do meteor showers occur? ｜ Day 118 How can we see meteor showers every year? ｜ Day 119 How many meteor showers are there?
Universe│Elements and Matter of the Universe
Day 120 What type of atom is most abundant in the universe? ｜ Day 121 Where did iron atoms come from? ｜ Day 122 Where did gold atoms come from? ｜ Day 123 What types of atoms made up the Earth? ｜ Day 124 What types of atoms are in the human body? ｜ Day 125 What is dark matter? ｜ Day 126 What is dark energy?
Earth│The Birth of the Earth
Day 127 When was the Earth born? ｜ Day 128 What is a magma ocean? ｜ Day 129 What is a snowball Earth? ｜ Day 130 What does the inside of the Earth look like? ｜ Day 131 How can we explore the inside of the Earth? ｜ Day 132 What are the radius and diameter of the Earth? ｜ Day 133 Is the Earth really round?
Planets│The Birth of the Solar System
Day 134 When was the solar system born? ｜ Day 135 How was the solar system born? ｜ Day 136 How many planets are there in the solar system? ｜ Day 137 What are the characteristics of terrestrial planets? ｜ Day 138 What are the characteristics of Jovian planets? ｜ Day 139 How big is the solar system? ｜ Day 140 Where is the solar system located?
Sun│Solar energy
Day 141 How far is the Earth from the Sun? ｜ Day 142 How much energy does the Sun have? ｜ Day 143 How is solar energy transmitted to the Earth? ｜ Day 144 What is solar energy used for? ｜ Day 145 When is the Sun most active? ｜ Day 146 What effect does the solar wind have on the Earth? ｜ Day 147 What is the identity of ultraviolet rays that are harmful to living things?
Moon│Moon and Earth
Day 148 What would happen to the Earth if the moon disappeared? ｜ Day 149 How far is the moon from the Earth? ｜ Day 150 How do we calculate a year based on the moon? ｜ Day 151 Can we tell the date by looking at the moon? ｜ Day 152 Does the moon look the same everywhere at the same time? ｜ Day 153 Why is it difficult to see the moon during the day? ｜ Day 154 Which part of the moon is visible from Earth?
Space Development│Satellite
Day 155 What was the first artificial satellite? ｜ Day 156 What do the Halley Fleet satellites do? ｜ Day 157 What do meteorological satellites do? ｜ Day 158 What are X-ray astronomy satellites? ｜ Day 159 What do Earth observation satellites do? ｜ Day 160 What does Hayabusa do? ｜ Day 161 What does Hayabusa 2 do?
Galaxy│Structure of the Galaxy
Day 162 What is a galaxy? ｜ Day 163 How big is a galaxy? ｜ Day 164 What does a galaxy look like? ｜ Day 165 How many galaxies are there in the universe? ｜ Day 166 Who named galaxies? ｜ Day 167 What is the difference between a galaxy group and a galaxy cluster? ｜ Day 168 What is the structure of the universe?
Star│Comet
Day 169 What is the difference between a comet and a meteor? ｜ Day 170 What are comets made of? ｜ Day 171 Why do comets have tails? ｜ Day 172 Can we see comets with the naked eye? ｜ Day 173 How do we discover new comets? ｜ Day 174 Where do comets come from? ｜ Day 175 Did life really originate from a comet?
Space│Black Hole
Day 176 What is a black hole? ｜ Day 177 Where is a black hole? ｜ Day 178 What does the inside of a black hole look like? ｜ Day 179 Is it really impossible to escape a black hole? ｜ Day 180 How were black holes discovered? ｜ Day 181 How can we observe a black hole? ｜ Day 182 What is a galactic nucleus?
Earth│A planet with life
Day 183 Can we find traces of the oldest living organisms? ｜ Day 184 How did living organisms emerge? ｜ Day 185 How did living organisms advance onto land? ｜ Day 186 When did multicellular organisms appear? ｜ Day 187 What was the first organism to land on land? ｜ Day 188 When did humans appear? ｜ Day 189 What is an ecosystem?
Planets│Mysteries of the Solar System
Day 190 What is the largest planet in the solar system? ｜ Day 191 Does the orbital period get shorter the closer a planet is to the sun? ｜ Day 192 Why do humans search for habitable planets? ｜ Day 193 Why are the planets named Mercury, Mars, and Jupiter? ｜ Day 194 What is the connection between the names of the planets and the days of the week? ｜ Day 195 What else does the solar system consist of besides planets? ｜ Day 196 Is there only one solar system in the universe?
Solar and lunar eclipses
Day 197 How does a solar eclipse occur? ｜ Day 198 What types of solar eclipses are there? ｜ Day 199 What happens when the moon covers the sun? ｜ Day 200 How does a lunar eclipse occur? ｜ Day 201 Why does a blood moon occur? ｜ Day 202 How can you tell when a solar eclipse is coming? ｜ Day 203 Which is more common, a solar eclipse or a lunar eclipse?
Moon│Phases and Revolution of the Moon
Day 204 Why does the moon look like the sun? ｜ Day 205 Why does the moon look round even on the third day of the lunar month? ｜ Day 206 Why do the phases of the moon occur? ｜ Day 207 Can we only see the full moon once a month? ｜ Day 208 Why does the full moon appear higher in winter? ｜ Day 209 What is the moon's orbital speed? ｜ Day 210 How far is the moon moving away from the Earth?
Space Development│Space Development Technology
Day 211 Which countries are actively developing space? ｜ Day 212 What is the International Space Station? ｜ Day 213 Can we see the International Space Station with the naked eye? ｜ Day 214 What kind of people live on the ISS? ｜ Day 215 What kind of clocks are used on the ISS? ｜ Day 216 Is it possible to build a space hotel?
Galaxy│Milky Way
Day 217 How did we know the identity of the Milky Way? ｜ Day 218 How big is our galaxy? ｜ Day 219 Why is our galaxy shaped like a spiral? ｜ Day 220 How many stars are there in our galaxy? ｜ Day 221 What does our galaxy look like? ｜ Day 222 Where is the Andromeda galaxy? ｜ Day 223 What happens when galaxies collide?
Star│Planetary Projection Hall
Day 224 Where did the name planetarium come from? ｜ Day 225 When did planetariums begin? ｜ Day 226 What is the structure of a planetarium? ｜ Day 227 Do planetariums show the same number of stars as real stars? ｜ Day 228 What is a hand-operated planetarium? ｜ Day 229 Is there a planetarium without a projector in the center? ｜ Day 230 How do you make a planetarium with a glowing ceiling?
Universe│The moment of the universe's birth
Day 231 What happened during the Big Bang? ｜ Day 232 Is there evidence that the Big Bang occurred? ｜ Day 233 What is the theory of inflation? ｜ Day 234 What is the evidence that inflation occurred? ｜ Day 235 Where did inflation start? ｜ Day 236 What does the outside of the universe look like? ｜ Day 237 How have humans perceived the universe?
Space Development│The Future of Space Development
Day 238 How did we learn about space? ｜ Day 239 What does NASA do in space? ｜ Day 240 What is the plan to colonize Mars? ｜ Day 241 What is an orbital elevator? ｜ Day 242 Is our daily life related to space? ｜ Day 243 What are neutrinos? ｜ Day 244 What can we learn from neutrinos?
Earth│Characteristics of the Earth
Day 245 Why is Earth called the 'water planet'? ｜ Day 246 Where did Earth's water come from? ｜ Day 247 Has the composition of seawater changed? ｜ Day 248 What was the state of the ice age like? ｜ Day 249 What does 'glacier' mean in the ice age? ｜ Day 250 When will the next ice age occur? ｜ Day 251 Is life only on Earth?
Planets│Planetary atmospheres and temperatures
Day 252 Is Mercury hot? ｜ Day 253 What are the clouds on Venus made of? ｜ Day 254 Is Jupiter made of only gas? ｜ Day 255 What are Jupiter's stripes? ｜ Day 256 Why are Uranus and Neptune blue? ｜ Day 257 Does Neptune have oceans? ｜ Day 258 Why does Venus rotate counterclockwise from Earth?
Sun│Aurora
Day 259 What is the Aurora? ｜ Day 260 Why do the Aurora appear? ｜ Day 261 What are the Aurora made of? ｜ Day 262 Why do the Aurora change color? ｜ Day 263 Where can I see the Aurora? ｜ Day 264 Can I see the Aurora in Japan? ｜ Day 265 What does the Aurora look like from space?
Moon│Lunar exploration
Day 266 Can we build a lunar base? ｜ Day 267 Who was the first person to land on the moon? ｜ Day 268 How do we determine the exploration point? ｜ Day 269 Why did astronauts go to the moon? ｜ Day 270 What does the Earth look like from the moon? ｜ Day 271 What did we discover from lunar exploration? ｜ Day 272 What was the mission of the lunar probe 'Kaguya'?
Earth│Earth's Magnetism
Day 273 Why do magnetic compasses point to the north? ｜ Day 274 How was the mystery of Earth's magnetism solved? ｜ Day 275 Is it true that the North and South Poles do not completely coincide? ｜ Day 276 Can the Earth's South and North Poles be reversed? ｜ Day 277 What is the geological era called the Chiba Period? ｜ Day 278 Is it true that the theory of continental drift has been revived? ｜ Day 279 Why does Earth have a magnet?
Star│Meteorite
Day 280 What is a meteorite? ｜ Day 281 What are meteorites made of? ｜ Day 282 Where do meteorites come from? ｜ Day 283 What is a crater? ｜ Day 284 Do meteorites only fall to Earth? ｜ Day 285 What happens when a giant meteorite falls? ｜ Day 286 What is the largest meteorite to have ever fallen to Earth?
Space Development│Space Flight
Day 287 Who was the first to successfully fly into space, and when? ｜ Day 288 What did Gagarin say immediately after the first successful space flight? ｜ Day 289 What do astronauts do? ｜ Day 290 How can I become an astronaut? ｜ Day 291 What functions does a spacesuit have? ｜ Day 292 Why do we need to wear spacesuits? ｜ Day 293 Why are spacesuits orange?
Universe│Theories for Understanding the Universe
Day 294 How many stars are born each day? ｜ Day 295 How will the universe end? ｜ Day 296 Will the universe contract again? ｜ Day 297 What is the Big Bounce Theory? ｜ Day 298 Why do particles and antiparticles arise symmetrically? ｜ Day 299 What is a matter and antimatter universe? ｜ Day 300 What can we learn from the theory of relativity?
Earth│Earth's Continents
Day 301 Where is the deepest hole dug in the ground? ｜ Day 302 What plates cover the Earth? ｜ Day 303 Do continents really move? ｜ Day 304 Were there once only one continent? ｜ Day 305 Are there impact craters on Earth? ｜ Day 306 How are rocks formed? ｜ Day 307 How is soil formed?
Planets│New Discovery of Planets
Day 308 Why is Mercury's surface full of impact craters? ｜ Day 309 Why are Venus and Earth different sizes? ｜ Day 310 Why does Mars look reddish? ｜ Day 311 Is it true that there is water on Mars? ｜ Day 312 Does Mars really have the largest volcano in the solar system? ｜ Day 313 How many moons does Jupiter have? ｜ Day 314 What are the surfaces of Jupiter's moons like?
Star│Astronomy
Day 315 What are first-magnitude and second-magnitude stars? ｜ Day 316 What is absolute magnitude? ｜ Day 317 What determines the brightness of a star? ｜ Day 318 How do we measure the distance to the moon? ｜ Day 319 What is an astronomical unit? ｜ Day 320 What is a parsec? ｜ Day 321 What is a light-year?
Earth│Sea
Day 322 Why do tides occur? ｜ Day 323 Why do waves form? ｜ Day 324 How much water is there in the ocean? ｜ Day 325 Where is the deepest ocean? ｜ Day 326 Did life really originate in the ocean? ｜ Day 327 What are submarine hydrothermal vents? ｜ Day 328 How does seawater move?
Space│Life Beyond Earth
Day 329 Are there Martians on Mars? ｜ Day 330 Is there other life in the solar system? ｜ Day 331 What is the 'habitable zone'? ｜ Day 332 Which star has the highest possibility of supporting life? ｜ Day 333 What is the Drake equation? ｜ Day 334 What is the search for extraterrestrial intelligence? ｜ Day 335 Has a message been sent outside the solar system? ｜ Day 336 What is a UFO? ｜ Day 337 Can a spaceship come to Earth?
Space Development│Life in Space
Day 338 Why do astronauts eat space food? ｜ Day 339 How do they make space food? ｜ Day 340 How do they transport space food? ｜ Day 341 How do they get water on the ISS? ｜ Day 342 Can you take a bath in space? ｜ Day 343 How do you use the toilet in space? ｜ Day 344 Is it true that your muscles become weaker in space?
Star│The Mystery of the Stars
Day 345 How long does the sun live? ｜ Day 346 What is the lifespan of a planet larger than the sun? ｜ Day 347 What is a supernova explosion? ｜ Day 348 How far is a star from Earth? ｜ Day 349 Is there a star made of diamonds? ｜ Day 350 Can we name stars? ｜ Day 351 What does Arabic have to do with star names?
Earth│Atmosphere
Day 352 What is the Earth's atmosphere like? ｜ Day 353 What is air made of? ｜ Day 354 When did oxygen on Earth come into existence? ｜ Day 355 Why doesn't air run out? ｜ Day 356 Why is the air thin at the top of mountains? ｜ Day 357 What are greenhouse gases? ｜ Day 358 What is global warming?
Space Development│Rockets
Day 359 When were rockets first developed? ｜ Day 360 How do rockets fly? ｜ Day 361 How far can rockets fly? ｜ Day 362 What kind of fuel do rockets use? ｜ Day 363 Why do we launch so many satellites? ｜ Day 364 Why are rocket launches so difficult? ｜ Day 365 What is a swing-by? ｜
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Into the book
If I knew just three things, I could be a scientist!
In the Northern Hemisphere, stars move around the North Star.
The stars in the night sky revolve around the North Star, so the constellations near the North Star can be seen all year round.
However, constellations that are lower in the sky may sometimes be obscured by mountains or tall buildings.
Sometimes it also appears upside down.
The movement of stars can only be observed at intervals of time.
Whether it's a daily change or a yearly change, the North Star is the center.
However, it moves about 1 degree every 4 minutes, making it difficult to feel the changes of a day, and it moves about 1 degree every day, making it difficult to know the changes of a year.
To notice changes, observations must be made at regular intervals.
Visible range varies depending on latitude
The altitude at which the North Star is visible decreases as you go south.
Therefore, in the northern regions with high latitudes, the Big Dipper and Cassiopeia are visible all year round, but in the southern regions with low latitudes, there are times when they are hidden below the horizon and cannot be seen.
Cassiopeia, which is shaped like the letter 'W', sometimes appears upside down depending on the season.
--- From "Can the constellations in the northern sky be seen all year round?" (p. 30)
If I knew just three things, I could be a scientist!
Sunlight contains many different types of light.
The brightness during the day when there is sunlight is due to visible light.
When we are exposed to sunlight, we feel warmth, and when we are exposed to strong sunlight for a long time, our skin becomes tanned or, in severe cases, we get sunburned.
The warmth you feel from sunlight is due to infrared rays, and the tanning of your skin is due to ultraviolet rays.
Sunlight contains many different types of light with different wavelengths.
Looking directly at the sun can cause blindness.
Looking at the sun with the naked eye can damage the retina and cause solar retinopathy.
In particular, blue light and ultraviolet light have high energy and have a serious effect on the retina.
It's dangerous even if it's not dazzling
In the past, people used to look at the sun through black glass or cellophane.
However, that level of protective equipment cannot block UV rays, etc.
Since symptoms appear in proportion to the 'intensity of sunlight × observation time', solar retinopathy can occur if you look at the sun for a long time even if your eyes are not dazzled.
--- From "Why Can't We Look at the Sun Through a Telescope?" (p. 34)
If I knew just three things, I could be a scientist!
The proto-Sun and the proto-solar disk
About 5 billion years ago, dust, such as rock grains and ice, a few micrometers (㎛) in diameter, floating in space, including hydrogen and gas, began to gather.
And as the proto-sun was formed, the gas and dust surrounding it gathered together to form the proto-solar disk.
Planets form in the primordial solar disk
As the primitive solar system was formed, the gas and dust that orbited it began to gather little by little, forming the foundation for the planets.
These small celestial bodies, believed to have existed when the solar system was formed, are called 'planetesimals'.
The asteroids repeatedly collided and gradually grew into larger planets.
The Earth-type and Jovian-type planets emerge along the 'Seolseon' boundary.
The 'snow line' refers to the temperature boundary where water turns into steam or ice.
Planets closer to the Sun than the stellar line lose gas to the Sun and become rocky, while planets further out than the stellar line become gas giant planets.
--- From "How Were Planets Born?" (p. 47)
If I knew just three things, I could be a scientist!
Is the nearest planet Venus or Mars?
Mars and Venus orbit right next to Earth.
During the period of Mars's closest approach to Earth, the distance between Earth and Mars reaches approximately 57 million kilometers.
And when Venus is closest, the distance is about 42 million kilometers.
Therefore, Venus is closer to Earth than Mars.
If you look closely, Mercury is the closest?
Some claim that Mercury is the closest planet to Earth.
Mercury has a fast orbital period and frequently comes closest to Earth.
Taking this into account, calculating the average distance claims that Mercury is closer than Venus.
The period of maximum proximity between planets is called the 'synodic period'.
Mercury is the closest of all the planets
According to this claim, Mercury would be the closest planet to all the planets.
Anyway, basically Venus is the closest planet to Earth, and the next closest planet is Mars.
--- From "Mercury is closest to Earth?"
If I knew just three things, I could be a scientist!
The ring is mainly composed of ice and is very thin.
Saturn's rings are mainly composed of ice, which is formed by frozen water.
It is believed to be a collection of numerous ice grains ranging from a few centimeters to several meters in size.
The rings are held in place by Saturn's gravity.
The rings are so thin that the Voyager probes observed them to be only a few tens of meters thick.
A beautiful ring visible even with a telescope
The rings that can be clearly seen through a telescope are named the A ring and the B ring from the outside.
The B ring is the widest at about 25,000 kilometers, while the A ring is about 15,000 kilometers.
Inside the B ring is a translucent and pale C ring.
When viewed from Earth, the rings sometimes disappear.
Saturn's rings are very thin compared to their width.
So, from Earth, the rings are not visible for several days before and after seeing them right next to each other.
This is called 'loop loss phenomenon' or 'loop loss'.
The rings orbiting Saturn are made up of ice crystals, and Saturn's gravity keeps them together.
--- From "Why Don't Saturn's Rings Fall Off?"
If I knew just three things, I could be a scientist!
The moon and the earth have always been together
The Moon and Earth have been together for most of their existence.
So, it can be assumed that the moon influences the Earth in various ways, from the Earth's current climate to its rotation speed and the tilt of its axis.
The difference between high and low tides gave birth to life.
Most marine life thrives on tidal action.
Most of the tides are caused by the moon's gravity.
Therefore, if the moon disappears, in the worst case scenario, there is a possibility that reproduction of living things will be affected.
The strength of gravity is proportional to distance, and tidal action in ancient times was more intense than it is now.
The way it disappears is also important
It is difficult to predict a situation where the moon would completely disappear even if it were to collide with a giant meteorite.
Even if most of the debris remains on the Moon, the magnitude of the gravitational force does not change.
Therefore, the tidal force will not change, and the Earth is likely to remain as it is.
Note that the size of the force does not depend on shape as long as the entire force has the same weight.
--- From "What would happen to the Earth if the moon disappeared?"
If I knew just three things, I could be a scientist!
Collision with the Andromeda Galaxy within about 4 billion years
It has been predicted that our galaxy will collide with our neighboring galaxy, the Andromeda Galaxy, within about 4 billion years.
This collision is expected to significantly change the shape of the two galaxies.
Our current Milky Way galaxy also took its current form through repeated collisions and mergers with other galaxies.
Approaching at 400,000 kilometers per hour
Large neighboring galaxies are gradually moving closer to each other due to gravity.
It has been predicted for over 100 years, but it is not yet known whether they will diverge or collide and merge.
I'm looking forward to seeing how it will change.
You can imagine the sight of countless stars colliding head-on.
The stars in the galaxy are far enough apart that they are unlikely to actually collide.
However, it is expected that the movement may differ from the existing one due to the influence of gravity.
The stimulation that occurs when gas that has not yet become stars collides can lead to mass star formation.
In the Northern Hemisphere, stars move around the North Star.
The stars in the night sky revolve around the North Star, so the constellations near the North Star can be seen all year round.
However, constellations that are lower in the sky may sometimes be obscured by mountains or tall buildings.
Sometimes it also appears upside down.
The movement of stars can only be observed at intervals of time.
Whether it's a daily change or a yearly change, the North Star is the center.
However, it moves about 1 degree every 4 minutes, making it difficult to feel the changes of a day, and it moves about 1 degree every day, making it difficult to know the changes of a year.
To notice changes, observations must be made at regular intervals.
Visible range varies depending on latitude
The altitude at which the North Star is visible decreases as you go south.
Therefore, in the northern regions with high latitudes, the Big Dipper and Cassiopeia are visible all year round, but in the southern regions with low latitudes, there are times when they are hidden below the horizon and cannot be seen.
Cassiopeia, which is shaped like the letter 'W', sometimes appears upside down depending on the season.
--- From "Can the constellations in the northern sky be seen all year round?" (p. 30)
If I knew just three things, I could be a scientist!
Sunlight contains many different types of light.
The brightness during the day when there is sunlight is due to visible light.
When we are exposed to sunlight, we feel warmth, and when we are exposed to strong sunlight for a long time, our skin becomes tanned or, in severe cases, we get sunburned.
The warmth you feel from sunlight is due to infrared rays, and the tanning of your skin is due to ultraviolet rays.
Sunlight contains many different types of light with different wavelengths.
Looking directly at the sun can cause blindness.
Looking at the sun with the naked eye can damage the retina and cause solar retinopathy.
In particular, blue light and ultraviolet light have high energy and have a serious effect on the retina.
It's dangerous even if it's not dazzling
In the past, people used to look at the sun through black glass or cellophane.
However, that level of protective equipment cannot block UV rays, etc.
Since symptoms appear in proportion to the 'intensity of sunlight × observation time', solar retinopathy can occur if you look at the sun for a long time even if your eyes are not dazzled.
--- From "Why Can't We Look at the Sun Through a Telescope?" (p. 34)
If I knew just three things, I could be a scientist!
The proto-Sun and the proto-solar disk
About 5 billion years ago, dust, such as rock grains and ice, a few micrometers (㎛) in diameter, floating in space, including hydrogen and gas, began to gather.
And as the proto-sun was formed, the gas and dust surrounding it gathered together to form the proto-solar disk.
Planets form in the primordial solar disk
As the primitive solar system was formed, the gas and dust that orbited it began to gather little by little, forming the foundation for the planets.
These small celestial bodies, believed to have existed when the solar system was formed, are called 'planetesimals'.
The asteroids repeatedly collided and gradually grew into larger planets.
The Earth-type and Jovian-type planets emerge along the 'Seolseon' boundary.
The 'snow line' refers to the temperature boundary where water turns into steam or ice.
Planets closer to the Sun than the stellar line lose gas to the Sun and become rocky, while planets further out than the stellar line become gas giant planets.
--- From "How Were Planets Born?" (p. 47)
If I knew just three things, I could be a scientist!
Is the nearest planet Venus or Mars?
Mars and Venus orbit right next to Earth.
During the period of Mars's closest approach to Earth, the distance between Earth and Mars reaches approximately 57 million kilometers.
And when Venus is closest, the distance is about 42 million kilometers.
Therefore, Venus is closer to Earth than Mars.
If you look closely, Mercury is the closest?
Some claim that Mercury is the closest planet to Earth.
Mercury has a fast orbital period and frequently comes closest to Earth.
Taking this into account, calculating the average distance claims that Mercury is closer than Venus.
The period of maximum proximity between planets is called the 'synodic period'.
Mercury is the closest of all the planets
According to this claim, Mercury would be the closest planet to all the planets.
Anyway, basically Venus is the closest planet to Earth, and the next closest planet is Mars.
--- From "Mercury is closest to Earth?"
If I knew just three things, I could be a scientist!
The ring is mainly composed of ice and is very thin.
Saturn's rings are mainly composed of ice, which is formed by frozen water.
It is believed to be a collection of numerous ice grains ranging from a few centimeters to several meters in size.
The rings are held in place by Saturn's gravity.
The rings are so thin that the Voyager probes observed them to be only a few tens of meters thick.
A beautiful ring visible even with a telescope
The rings that can be clearly seen through a telescope are named the A ring and the B ring from the outside.
The B ring is the widest at about 25,000 kilometers, while the A ring is about 15,000 kilometers.
Inside the B ring is a translucent and pale C ring.
When viewed from Earth, the rings sometimes disappear.
Saturn's rings are very thin compared to their width.
So, from Earth, the rings are not visible for several days before and after seeing them right next to each other.
This is called 'loop loss phenomenon' or 'loop loss'.
The rings orbiting Saturn are made up of ice crystals, and Saturn's gravity keeps them together.
--- From "Why Don't Saturn's Rings Fall Off?"
If I knew just three things, I could be a scientist!
The moon and the earth have always been together
The Moon and Earth have been together for most of their existence.
So, it can be assumed that the moon influences the Earth in various ways, from the Earth's current climate to its rotation speed and the tilt of its axis.
The difference between high and low tides gave birth to life.
Most marine life thrives on tidal action.
Most of the tides are caused by the moon's gravity.
Therefore, if the moon disappears, in the worst case scenario, there is a possibility that reproduction of living things will be affected.
The strength of gravity is proportional to distance, and tidal action in ancient times was more intense than it is now.
The way it disappears is also important
It is difficult to predict a situation where the moon would completely disappear even if it were to collide with a giant meteorite.
Even if most of the debris remains on the Moon, the magnitude of the gravitational force does not change.
Therefore, the tidal force will not change, and the Earth is likely to remain as it is.
Note that the size of the force does not depend on shape as long as the entire force has the same weight.
--- From "What would happen to the Earth if the moon disappeared?"
If I knew just three things, I could be a scientist!
Collision with the Andromeda Galaxy within about 4 billion years
It has been predicted that our galaxy will collide with our neighboring galaxy, the Andromeda Galaxy, within about 4 billion years.
This collision is expected to significantly change the shape of the two galaxies.
Our current Milky Way galaxy also took its current form through repeated collisions and mergers with other galaxies.
Approaching at 400,000 kilometers per hour
Large neighboring galaxies are gradually moving closer to each other due to gravity.
It has been predicted for over 100 years, but it is not yet known whether they will diverge or collide and merge.
I'm looking forward to seeing how it will change.
You can imagine the sight of countless stars colliding head-on.
The stars in the galaxy are far enough apart that they are unlikely to actually collide.
However, it is expected that the movement may differ from the existing one due to the influence of gravity.
The stimulation that occurs when gas that has not yet become stars collides can lead to mass star formation.
--- From "What would happen if galaxies collided?"
Publisher's Review
The most fun and effective way to learn scientific knowledge
'Whole - piece by piece, canned'!
If you examine the 365 items in this book one page a day, one by one, as if examining a tree, and then understand and connect them as a whole, as if looking at the forest, you will surprisingly come up with new 'scientific knowledge'.
You too can read this book in a 'canned' way and become an amateur space expert!
Question 1: “Why do the tens of thousands to millions of stars in the galaxy form groups instead of scattering into space?”
Answer 1: It is because of the ‘gravity’ that each star has.
That is, each star is not scattered into the vast space due to each other's gravity, but maintains a certain distance between itself and forms a group such as a globular cluster.
Question 2: “Why don’t Saturn’s rings come off?”
Answer 2: Saturn's rings are mainly composed of ice.
It is believed to be a collection of numerous ice grains ranging from a few centimeters to several meters in size, but is very thin, only a few tens of meters thick.
But how do Saturn's thin rings maintain their shape without scattering or falling apart? The answer, again, lies in gravity.
Saturn's gravity is holding back the ice grains that are about to scatter into space.
Knowledge in its entirety: The existence of galaxy clusters is possible, and the rings of Saturn are able to maintain their original shape without disappearing, all due to the action of 'gravity'.
Gravity is a universal force that exists everywhere in the vast universe and is the most powerful and amazing force that allows the universe to maintain its original form.
Author of the best-selling book "Fun Chemistry Stories You'll Read All Night"
Written with great care by Takeo Samaki and 17 top experts
365 fun science facts, one page a day!
『Science Encyclopedia: Canned Food - Space Edition』 is a collection of 365 delightful pieces of scientific knowledge, one page a day, painstakingly compiled by Takeo Samaki, author of the best-selling 『Fun Chemistry Stories You'll Read All Night』 and 『Fun Physics Stories You'll Read All Night』, and 17 top experts in the field of science.
Let's briefly go over some of the details.
1.
Let’s look at the item “Is Mercury closest to Earth?” (Day 25).
As we all know, the planet closest to the Sun in our solar system is Mercury, followed by Venus, and then Earth and Mars.
However, the authors of this book say that, from a different perspective, 'Mercury could be the closest planet to Earth.'
Why is this? This is because of the 'synodic period', the period when the planets come closest to each other.
Mercury has a fast orbital period and frequently comes closest to Earth.
Taking this into account, calculating the average distance means that Mercury is closer than Venus.
2.
“What would happen to the Earth if the moon disappeared?” (Day 148) The moon and the Earth have been together for most of their time since their birth.
As such, the moon exerts a profound influence on Earth in many ways, from climate to rotation speed and axial tilt.
Moreover, most organisms living in the ocean reproduce by the difference between high and low tides, or tidal action, and since most of the tides are caused by the gravitational pull of the moon, if the moon disappears, in the worst case scenario, there is a possibility that it will cause fatal problems for the reproduction of organisms.
3.
“Did life really originate from a comet?” (Day 175) According to the authors of this book, it is not yet clear where the organic matter that became the source of life came from and why it came there.
However, the existence of organic matter has been observed in the comet, and the claim that it was brought by a comet that left behind a primitive appearance is accepted as a fairly credible hypothesis.
That is why scholars nickname comets the ‘fossils of the solar system.’
For reference, if you collect the comet's light with a large telescope and analyze the ejected tail using a spectrograph, you can observe the characteristic light of gas atoms and molecules.
Observations have shown that ice is the most abundant, followed by nitrogen compounds such as ammonia and carbon compounds such as methane and ethane.
Interestingly, both nitrogen and carbon compounds are important building blocks of life.
It is in this context that the ‘Comet Origin of Life Theory’ emerged.
4.
“What is the outside of the universe like?” (Day 236) According to the authors of this book, since vibration cannot be eliminated, there must have been multiple points where the universe was born.
It is also possible that two universes are connected through that point.
This means that 'there may not be one universe', and scientists have named this 'multiverse'.
According to the authors, “as individual universes grow, the mediating points are severed and they drift independently as ‘son universes.’”
And this son universe creates the 'grandson universe'.
In this context, it is logically natural to see that rapid expansion is also occurring in various places.
『Science Encyclopedia Canned - Space Edition』 has a format that organizes '1 page per day, 365 days, 365 items' in a clear manner, so that anyone can read it with ease and accumulate knowledge. In addition, since it clearly organizes all items into three categories with the subtitle 'If you know just three things, I too can be a scientist!', even readers without much scientific knowledge can easily remember the content and organize it in their heads after reading it just once.
This book is a very smart and informative book that anyone, regardless of age, can enjoy and increase their scientific knowledge with, even if they weren't good at science in school, but have looked up at the night sky and wondered at least once, "How did the sun, the moon, the stars, and the Earth come into being?", "Is there an end to the universe?", or "How many stars are there in the universe?"
Moreover, as can be seen from the fact that many of the authors of this book are science teachers in elementary, middle, and high schools, or professors or lecturers who teach students at universities, it has a high degree of 'curriculum relevance' and is suitable as a kind of science supplementary textbook for young readers.
'Whole - piece by piece, canned'!
If you examine the 365 items in this book one page a day, one by one, as if examining a tree, and then understand and connect them as a whole, as if looking at the forest, you will surprisingly come up with new 'scientific knowledge'.
You too can read this book in a 'canned' way and become an amateur space expert!
Question 1: “Why do the tens of thousands to millions of stars in the galaxy form groups instead of scattering into space?”
Answer 1: It is because of the ‘gravity’ that each star has.
That is, each star is not scattered into the vast space due to each other's gravity, but maintains a certain distance between itself and forms a group such as a globular cluster.
Question 2: “Why don’t Saturn’s rings come off?”
Answer 2: Saturn's rings are mainly composed of ice.
It is believed to be a collection of numerous ice grains ranging from a few centimeters to several meters in size, but is very thin, only a few tens of meters thick.
But how do Saturn's thin rings maintain their shape without scattering or falling apart? The answer, again, lies in gravity.
Saturn's gravity is holding back the ice grains that are about to scatter into space.
Knowledge in its entirety: The existence of galaxy clusters is possible, and the rings of Saturn are able to maintain their original shape without disappearing, all due to the action of 'gravity'.
Gravity is a universal force that exists everywhere in the vast universe and is the most powerful and amazing force that allows the universe to maintain its original form.
Author of the best-selling book "Fun Chemistry Stories You'll Read All Night"
Written with great care by Takeo Samaki and 17 top experts
365 fun science facts, one page a day!
『Science Encyclopedia: Canned Food - Space Edition』 is a collection of 365 delightful pieces of scientific knowledge, one page a day, painstakingly compiled by Takeo Samaki, author of the best-selling 『Fun Chemistry Stories You'll Read All Night』 and 『Fun Physics Stories You'll Read All Night』, and 17 top experts in the field of science.
Let's briefly go over some of the details.
1.
Let’s look at the item “Is Mercury closest to Earth?” (Day 25).
As we all know, the planet closest to the Sun in our solar system is Mercury, followed by Venus, and then Earth and Mars.
However, the authors of this book say that, from a different perspective, 'Mercury could be the closest planet to Earth.'
Why is this? This is because of the 'synodic period', the period when the planets come closest to each other.
Mercury has a fast orbital period and frequently comes closest to Earth.
Taking this into account, calculating the average distance means that Mercury is closer than Venus.
2.
“What would happen to the Earth if the moon disappeared?” (Day 148) The moon and the Earth have been together for most of their time since their birth.
As such, the moon exerts a profound influence on Earth in many ways, from climate to rotation speed and axial tilt.
Moreover, most organisms living in the ocean reproduce by the difference between high and low tides, or tidal action, and since most of the tides are caused by the gravitational pull of the moon, if the moon disappears, in the worst case scenario, there is a possibility that it will cause fatal problems for the reproduction of organisms.
3.
“Did life really originate from a comet?” (Day 175) According to the authors of this book, it is not yet clear where the organic matter that became the source of life came from and why it came there.
However, the existence of organic matter has been observed in the comet, and the claim that it was brought by a comet that left behind a primitive appearance is accepted as a fairly credible hypothesis.
That is why scholars nickname comets the ‘fossils of the solar system.’
For reference, if you collect the comet's light with a large telescope and analyze the ejected tail using a spectrograph, you can observe the characteristic light of gas atoms and molecules.
Observations have shown that ice is the most abundant, followed by nitrogen compounds such as ammonia and carbon compounds such as methane and ethane.
Interestingly, both nitrogen and carbon compounds are important building blocks of life.
It is in this context that the ‘Comet Origin of Life Theory’ emerged.
4.
“What is the outside of the universe like?” (Day 236) According to the authors of this book, since vibration cannot be eliminated, there must have been multiple points where the universe was born.
It is also possible that two universes are connected through that point.
This means that 'there may not be one universe', and scientists have named this 'multiverse'.
According to the authors, “as individual universes grow, the mediating points are severed and they drift independently as ‘son universes.’”
And this son universe creates the 'grandson universe'.
In this context, it is logically natural to see that rapid expansion is also occurring in various places.
『Science Encyclopedia Canned - Space Edition』 has a format that organizes '1 page per day, 365 days, 365 items' in a clear manner, so that anyone can read it with ease and accumulate knowledge. In addition, since it clearly organizes all items into three categories with the subtitle 'If you know just three things, I too can be a scientist!', even readers without much scientific knowledge can easily remember the content and organize it in their heads after reading it just once.
This book is a very smart and informative book that anyone, regardless of age, can enjoy and increase their scientific knowledge with, even if they weren't good at science in school, but have looked up at the night sky and wondered at least once, "How did the sun, the moon, the stars, and the Earth come into being?", "Is there an end to the universe?", or "How many stars are there in the universe?"
Moreover, as can be seen from the fact that many of the authors of this book are science teachers in elementary, middle, and high schools, or professors or lecturers who teach students at universities, it has a high degree of 'curriculum relevance' and is suitable as a kind of science supplementary textbook for young readers.
GOODS SPECIFICS
- Date of issue: February 16, 2024
- Page count, weight, size: 398 pages | 608g | 148*210*30mm
- ISBN13: 9791188635894
- ISBN10: 1188635891
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