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It is still unknown whether bone recovers completely. Unlike people with osteoporosis, astronauts eventually regain their bone density. [citation needed] After a 3–4 month trip into space, it takes about 2–3 years to regain lost bone density. [citation needed] New techniques are being developed to help astronauts recover faster. Research on ...
As a result, trekking beyond the Earth's confines causes many physiological changes that affect an astronaut's health. Here is an explanation of some of the effects on human health caused by space ...
[1] [2] Astronauts have also died while training for space missions, such as the Apollo 1 launch pad fire that killed an entire crew of three. There have also been some non-astronaut fatalities during spaceflight-related activities. As of 2025, there have been over 188 fatalities in incidents regarding spaceflight.
Due to the potential negative effects of astronaut exposure to cosmic rays, solar activity may play a role in future space travel. Because galactic cosmic ray fluxes within the Solar System are lower during periods of strong solar activity, interplanetary travel during solar maximum should minimize the average dose to astronauts. [citation needed]
Being an astronaut isn't all glamour. Being in space takes a huge toll on your body, and some of it is just downright gross. Being an astronaut isn't all glamour. Being in space takes a huge toll ...
'The other wonderful thing about this job is the opportunity to go and talk to people about what we do,' NASA astronaut Andrew J. Feustel said. The amazing perks of being a NASA astronaut Skip to ...
About 75% of all astronauts have taken medication during shuttle missions for conditions such as motion sickness, headache, sleeplessness, and back pain. Other common conditions include minor trauma , burns , dermatological and musculoskeletal injuries , respiratory illnesses and genitourinary problems.
We wanted to show how nongovernment astronauts could be happy, healthy and productive in space. If Inspiration4 was successful, we knew it would open the door to more interesting missions.