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American astronaut Marsha Ivins demonstrates the effects of microgravity on her hair in space. The effects of spaceflight on the human body are complex and largely harmful over both short and long term. [1] Significant adverse effects of long-term weightlessness include muscle atrophy and deterioration of the skeleton (spaceflight osteopenia). [2]
[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 2024, there have been over 188 fatalities in incidents regarding spaceflight.
Astronauts are exposed to approximately 72 millisieverts (mSv) while on six-month-duration missions to the International Space Station (ISS). Longer 3-year missions to Mars, however, have the potential to expose astronauts to radiation in excess of 1,000 mSv.
Recently released photos of two NASA astronauts stranded aboard the International Space Station (ISS) have caused health concerns to rise. Although Sunita Williams and Barry Wilmore were ...
Yahoo Life asked astronauts Jasmin Moghbeli and Andreas Mogensen — who are currently living and working on the International Space Station — about some of the health challenges of space.
A group of NASA astronauts have remained secretive about why they were taken to hospital after their prolonged space station mission. Astronauts Matthew Dominick, Michael Barratt and Jeanette Epps ...
In a few cases, astronauts were brought back to Earth due to episodes of renal colic and arrhythmia, shortening their stays in space and possibly ending their missions. [ 2 ] People who are exposed to harsh environments have suffered medical conditions that could be considered as analogs of the space environment .
Space travel takes a serious toll on the human body. The zero gravity that astronauts experience on a daily basis can cause their bones and muscles to severely decay — but one company is working ...