The Artemis II crew have safely returned home after re-entering Earth's atmosphere at 25,000mph (40,000km/h), splashing down off the coast of California. They have travelled deeper into space than any humans before them - just over 4,000 miles more than the record of 248,655 set by Apollo 13 in 1970. Astronauts are highly trained to cope with the physical and mental strain of space. Although it might seem like it would be a difficult experience to endure, astronauts talk about being in space as