Chapter 1 What is the Solar System?
Orbits of the planets ① (up to Mars) _ Orbits of the planets ② (overall view) _ Members of the solar system _ Planets seen from Earth _ Comparison of the sizes of the sun and planets _ Density and types of planets _ Size of the solar system

Chapter 2 The Sun, the Earth, and the Moon
What is the Sun? _ The internal structure of the Sun _ The magnetic activity of the Sun _ The Sun captured by an observation satellite _ The mechanism of the four seasons _ The Earth's energy balance _ The Sun and the Earth's atmosphere _ The cycle of the Sun and the ocean _ What is the Moon? _ The movements of the Earth and the Moon _ Lunar and solar eclipses _ High and low tides

Column How do beautiful aurora appear?
Column When the sun gets dark, does the Earth get colder?

Chapter 3: Terrestrial Planets
Mercury ①~② _ Mercury captured by the probe _ Venus ①~② _ Venus captured by the probe _ Earth ①~② _ Earth seen from space _ Mars ①~② _ Mars captured by the probe

Column: Is there life on Mars?

Chapter 4 Jovian Planets
Jupiter ①~② _ Jupiter and its satellites captured by the probe _ Saturn ①~② _ Saturn and its satellites captured by the probe _ Uranus ①~② _ Neptune ①~②

Supergiant rings discovered on Saturn

Chapter 5 Celestial bodies other than planets
A new definition of a planet _ Classification of celestial bodies in the solar system _ Pluto ①~② _ Pluto captured by a probe _ Satellites, asteroids, and comets in the solar system _ Asteroids _ Celestial bodies passing through Neptune's orbit _ Comets _ The end of the solar system _ Celestial bodies that failed to become planets _ Asteroids and comets captured by a probe

Column: Is the Solar System a 'Special Species'?
Column: Is there an undiscovered planet at the edge of the solar system?

Chapter 6: The Formation of the Solar System
The birth of the universe _ The birth of the galaxy _ The origin of the solar system _ The birth of the 'seed' of the sun _ The birth of the primitive sun _ The birth of a planetoid _ Growth from a planetoid to a primitive planet _ The disappearance of the gas disk _ The completion of the solar system _ The growth of the sun

Column: Were our bodies created through the death of stars?
If the disk had more gas, Earth wouldn't exist?

Chapter 7: The End of the Solar System
It expands to become a red giant _ Swallows Earth? _ Becomes a planetary nebula _ Its final form - Becomes a white dwarf

The life of a star is randomly determined by its mass!?
There are still many mysteries in the life of a columnist.
The days become longer and the moon moves farther away due to the influence of the tides.

Data section
① Planets, dwarf planets, and satellites
② Probe
③ Astronomical phenomenon schedule

· What is the solar system? (Constituents of the solar system, planetary orbits, planets as seen from Earth, size, density, types of planets, etc.)
The solar system is a collection of planets and satellites centered around the sun.
Our solar system belongs to the Milky Way galaxy, which is home to countless stars like the sun.
Our galaxy is just one of countless galaxies in the universe.
Although the solar system is a very small entity in the universe, it is a world of enormous scale when viewed from the human senses.

First, we learn about the overall shape of the solar system, and compare the sizes of the planets and their distances from the sun in various ways.

· The Sun, the Earth, and the Moon (the structure and magnetic activity of the Sun, the mechanism of the four seasons, the atmospheric and oceanic circulation of the Sun and the Earth, the movement of the Earth and the Moon, solar and lunar eclipses, high and low tides, etc.)
The celestial bodies that have the greatest influence on our Earth are the sun and the moon.
The sun is an exceptionally large celestial body within the solar system and emits enormous amounts of energy.
We cannot survive without this energy.
Solar energy is also deeply involved in the changes of the four seasons and the circulation of the ocean.
Meanwhile, the moon is the only satellite that orbits the Earth.
Because they are close to each other, the Earth and the Moon have a close relationship, such as the Moon's gravitational pull causing tides on Earth.
We take a close look at the Earth, where we humans live, and the Sun and Moon.

· Terrestrial and Jovian planets (summary of the main contents of the eight planets, planets and their moons captured by probes, etc.)
There are eight planets in the solar system.
Among them, Mercury, Venus, Earth, and Mars, which have solid surfaces, are called 'terrestrial planets'.
These are four planets that orbit close to the Sun.
Meanwhile, the four planets that are further away than Mars, Jupiter, Saturn, Uranus, and Neptune, are called the 'Jovian planets'.
They have very large radii and masses compared to terrestrial planets.
It introduces various information, including the characteristics of each planet, its formation process, and interesting satellites.

· Celestial bodies other than planets (definition of planets, classification of solar system bodies, Pluto, asteroids, comets, home planets of the solar system, bodies transiting Neptune's orbit, bodies that are not planets, etc.)
In 2006, the definition of a planet was first established.
As a result, Pluto, which had long been the ninth planet in the solar system, was demoted from its planetary status and reclassified into a new category called "dwarf planet."
The definition of a planet, that is, what a planet is, is explained in detail.
We also look at the various types of celestial bodies that revolve around the Sun, including planetary satellites, asteroids, comets, and trans-Neptunian objects.

· The birth and end of the solar system (the origin of the solar system, from planetesimals to protoplanets, the completion and growth of the solar system, the expanding red giant, the end of the sun and the Earth, etc.)
When, where, and how did the solar system come into being and become what it is today? While it's incredibly difficult to know the exact truth, observations and theories continue to develop some scenarios.
Based on the latest information, we trace the scenario of the formation of the solar system from the origin of the universe.
But will the solar system last forever? Unfortunately, even stars like the Sun have a lifespan, and the solar system itself will eventually come to an end.
Based on observations of numerous stars, it is thought that the Sun will eventually turn into a giant red star.
What fate awaits our Earth then? We explore how the Sun will spend the remaining half of its life, and the latest research suggests a tragic end for the Sun and the solar system.