A mission to Mars will last two to three years. What psychological challenges will astronauts face when spending so long in space? We talked to former NASA astronaut Scott Kelly, who spent a year on the International Space Station, to find out.
2016-08-03 04:15:54.847000 | URL | haku
A mission to Mars will last two to three years. What psychological challenges will astronauts face when spending so long in space? We talked to former NASA astronaut Scott Kelly, who spent a year on the International Space Station, to find out.