Six months on the ISS causes bone loss, vision changes, cardiovascular deconditioning, and DNA alterations. Space medicine research is racing to solve these problems before humans go to Mars.
From Valentina Tereshkova's 1963 Vostok flight to Peggy Whitson's record 665 days and Christina Koch on Artemis II: the women astronauts reshaping human spaceflight.
A kids' space guide covering the 8 planets, how rockets fly, astronaut food and sleep, backyard stargazing tips, and science projects you can try at home tonight.
