NASA astronaut Christina Koch returns to Earth from space

NASA's astronaut Christina Koch returned from space to Earth safely yesterday. Koch returned after an 11-month mission, breaking the world record for the most time spent by a woman in space.

Koch has spent 328 days on International Space Station ISS,



surpassing the previous record of 289 days held by fellow American Peggy Whitson. Koch's medical data will be especially valuable to NASA scientists as the agency draws up plans for a long-duration manned mission to Mars.