NASA astronauts Sunita Williams and Barry "Butch" Wilmore, currently on an extended mission on the International Space Station, have reported weight loss. This is due to fluid shifts in space causing changes in the body. Despite concerns about their health, NASA has assured the public that the astronauts are closely monitored and in good health. The agency has also warned against sharing any leaked details about the astronauts' health. This comes after a recent incident with the SpaceX Crew-8 mission, raising questions about the effects of extended space travel, but NASA maintains that Williams and Wilmore are doing well.