What in the World How does going into space impact the human body?
Apr 29, 2025
Caroline Steel, a BBC science presenter, dives into the fascinating world of human adaptation to space. She discusses how spending extended time in microgravity affects muscles, bones, and even vision, highlighting the unique challenges astronauts face. Steel shares insights on training regimens designed to combat these effects and the extraordinary stories of astronauts like Peggy Whitson, who holds the record for time spent in space. Discover how these brave explorers maintain their health while floating among the stars!
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Unexpected Extended Space Mission
- Butch Wilmore and Suni Williams planned an 8-day space trip but stayed 9 months due to technical issues.
- Their extended stay highlights unexpected challenges of life in zero gravity.
Gravity Loss Impacts Body Strongly
- Lack of gravity makes muscles and bones lose strength since they don't work to keep us upright.
- Fluid shifts upward in zero gravity, causing puffy faces and affecting blood circulation.
Space Vision Damage Risks
- Fluid pooling in astronauts' heads worsens eye pressure, causing lasting vision damage in 40% of cases.
- Vision changes caused in space often do not fully reverse after return to Earth.