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Astronauts are taller in space! On Earth, gravity compresses our spine. When gravity is weak, the space between the vertebrae in our spine is able to expand.
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Cosmic radiation, stress, insomnia and trying to re-orient your body's balance system mean the astronaut's brain is constantly adopting while in space.
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The human body is conditioned to life on Earth. So when we leave our home planet, lots of weird stuff happens to us.
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Like our muscles, bones aren't needed much in microgravity. Without exercise, they deteriorate and become weak and brittle.
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In space, muscles aren't really needed to hold up the body. Over time, they become weaker and deteriorate (worse). Astronauts must exercise everyday to prevent this from happening.
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Blood is normally pulled towards our feet by gravity. But in space, the blood and fluid is pulled towards the head giving astronauts puffy faces.
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In space, hearts don't have to work as hard to pump blood around the body. So eventually, they may shrink, which can cause problems for astronauts when they return to earth.
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Many astronauts suffer from some vision loss. Although it is not completely understood why. It is believed to be due to increased pressure inside the head. Cosmic rays, usually absorbed by our atmosphere, also creates momentary flashes of light.
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The biggest perk of traveling to space is the view. Just past the boundary between space and Earth, passengers can catch a stunning glimpse of our planet juxtaposed against the wide unknown of space. The view is meant to be awe-inducing, and the experience even h...
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Without gravity, our bodies would change. After a short visit to space, astronauts lose bone mass and muscle strength, and their sense of balance changes....
On May 30, 2020 the private company SpaceX launched astronauts to the International Space Station. This is said to be not only a huge step for the humanity, but also a sign that USA has become able to transport its astronauts to space without Russians' help.
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