The one and only book that will reveal the true face of space science.
How do humans exist in the endless abyss of space?
Amazon and New York Times bestseller
Author Kim Gyul-wool, Science Communicator Orbit Recommended

In an era where humanity's first exploration of Mars is no longer just a dream, the question of whether humans can exist in space has become a realistic challenge.
"How do humans survive in space?" seeks to answer this enormous question based on scientific facts.
Mary Roach, a science nonfiction author who received rave reviews from the Washington Post, visited major space agencies, including NASA (National Aeronautics and Space Administration), JAXA (Japan Aerospace Exploration Agency), and Russia's Star City, to experience training and interview actual astronauts and scientists.
The journey demonstrates the physical and mental rigor of space flight, vividly conveying the fragility and strength of human nature often overshadowed by heroic tales in the news.
Readers follow the daily lives of astronauts and experience the failures and adaptations hidden behind the glamorous landscape of space exploration.

"How Humans Survive in Space" deeply examines how humans endure, adapt, and survive in the extreme environment of zero gravity, from a scientific yet human perspective.
This book, which honestly records space science from past to present, is the one and only must-read space science humanities book for the coming era of space exploration.

The universe you will encounter in this book is not the great feats or tragic misfortunes you have seen on television.
The little comedies that happen in the gaps, made up of everyday challenges and successes.
--- p.11

The essence of the Thousand-Hand Origami judging process is that each applicant's work is recorded by time zone.
After completing the thousand cranes, the applicants are hung on a long rope.
After the quarantine period, all applicants' paper cranes will be collected and analyzed.
It could be called the scientific investigation of origami.
As the deadline approaches, does the pressure cause the folds of the paper cranes to become crooked? How different will the first ten folds be from the last ten? Inoue explains, "A drop in accuracy is evidence of an inability to withstand the pressure."
--- p.20

What would it be like to be trapped in a sterile, artificial structure for two years, unable to escape work or colleagues, without flowers, trees, or sex, and with nothing but empty space or, at best, red dust outside the window? --- p.41

Gemini 4 astronaut Edward White suddenly said he felt "like a millionaire" about four minutes into NASA's first spacewalk.
He struggled to find the right words to describe his feelings.
“I… am just amazed…” --- p.85

Schweickart earned the dubious title of "the only American astronaut to vomit in space," as he put it (motion sickness was rare during the Mercury and Gemini space programs).
(Perhaps because those space capsules were so cramped that you couldn't move around enough to cause motion sickness).
Much later, Bowman confessed, as Cernan wrote in his memoir, that he too was "as seasick as a dog the entire flight to the moon."
--- p.162

The first female cosmonaut, Valentina Tereshkova, said in a 2007 interview that going to Mars was a dream of early Russian cosmonauts, and that even now, at age 72, she wants to make that dream come true.
“Even if I can’t return, I’m ready to fly.” --- p.232

Conventional shower methods are ineffective in a zero-gravity environment.
The water sprays only a few inches from the shower head and then clumps into large droplets.
It's cool, but it doesn't really help with body washing.
If you hold the shower head close enough that it doesn't create large droplets, the water will bounce off your skin, creating droplets that float around the spacecraft and you'll have to chase them away to remove them.
Astronaut Alan Bean said of Skylab's retractable shower, "It's easier to just forget about showering."
--- p.285

The ridiculous story doesn't end there.
What made things even more tedious for the astronauts was having to knead the feces by hand before rolling them up and sealing them, adding a disinfectant to prevent any unpleasant excrement from leaking out.
But if you don't, the fecal bacteria will do their job, digesting the feces and releasing gas.
The gas that would have been a fart if it had been in the intestines.
Sealed stool bags containing feces cannot pass gas and may burst if not disinfected.
--- p.386

Despite the milkshake's bad reputation, researchers evaluated no fewer than twenty different commercial liquid food recipes.
I once read an Air Force technical report that listed desirable characteristics of edible paper: "tasteless, flexible, and sticky."
I thought this might be the hallmark of space food developers.
--- p.417

The first foods tested were all infamous dice-shaped foods.
Mini sandwiches, bite-sized meats, tiny desserts—they were food that looked like something straight out of a doll's kitchen.
Dice-shaped foods were the main culprit causing indigestion.
--- p.429

The approximate cost of sending a spacecraft to Mars is estimated to be $500 billion, the same as the cost of the Iraq War so far.
Is the enormous cost justifiable? What benefits are there to sending humans to Mars, especially given the existence of robotic landers capable of scientifically proficient, if not as fast, human missions?

--- p.453