Nick Devereux explains how NASA is not letting the public know how weak the astronauts get in space. They have to be cared for and rehabilitated after their return. I conclude that this means that, if NASA did let it be known, the public would realize that the “going to Mars soon” hype is just a hoax to raise money.
NASA must know they would be sending the astronauts to certain death. They would not be able to perform the strenuous activities that would be needed for survival after landing on Mars. An expensive and difficult artificial gravity would be needed, it seems, if even that would work. Science fiction shows just ignore the problem and assume that spacemen have gravity.
“Spending a year in space takes such a toll on the human body that astronauts literally have to learn how to walk again once they’re back on Earth. At least, that’s what seems to have happened to Scott Kelly — the American astronaut who spent 340 days on the International Space Station (ISS) between 2015 and 2016…In an exclusive video (not available–here is a short substitute–Ed) given to The Verge by PBS, Kelly is seen trying to walk on a straight line right after landing in the steppes of Kazakhstan. He slowly gets up and stumbles. Putting one foot in front of the other looks like a gargantuan task, as if his legs are made of jelly. Six hours after landing, his steps are a bit quicker, but still uncertain. And after 22 hours, he’s much more stable, but still wobbly. It’s as if Kelly is a one-year-old just learning how to walk.” –The Verge
Continuing from The Verge article—
// That’s because zero gravity messes with our sense of orientation. On Earth, we know where is up and where is down. In space, not so much. Sensors inside our ears, which are part of the vestibular system that controls balance, are thrown off — often causing astronauts to feel dizzy or queasy the first few days in space. Once they get back to Earth, it takes a while for their bodies to readjust. Hence, the walking problems.
And it’s not just the messed-up balance system, either. The first time I interviewed Kelly — two months after he’d come back from his year in space — he told me his feet still hurt. Two months after being thrust back into Earth’s gravity. This is just one way long periods in space affect the human body. And that’s exactly why Kelly spent a year on the ISS to begin in: by understanding how zero gravity changes us, the next generation of astronauts will be better prepared for deep-space travel. //