– Russian cosmonaut Valeri Polyakov holds the record for the longest single spaceflight at 437 days. –
– American astronaut Scott Kelly spent 340 days on the ISS, studying the effects of long-term space travel. –
– Peggy Whitson holds the U.S. record for cumulative time in space, with 665 days over multiple missions. –
– Sergei Krikalev, a Russian cosmonaut, has 803 days in space across six missions. –
– Gennady Padalka set the world record with 879 days in space across five missions. –
– Extended space missions help scientists understand physical and psychological impacts on astronauts. –
– Prolonged time in microgravity affects muscle mass, bone density, and vision. –
– Space agencies study radiation exposure to develop protective measures for astronauts. –
– Psychological challenges include isolation and distance from Earth, affecting mental well-being. –
These records and research are essential for future deep space missions, including to Mars.