India, April 10 -- Four astronauts travelling back to Earth from the far side of the moon on Nasa's Artemis II mission spoke of their emotions as they wrapped up the unprecedented flight and prepared to re-enter the atmosphere in a "fireball", during their first press conference from space on Wednesday. The Artemis II crew, flying in Orion capsule since launching last week, are due to splash down off the Southern California coast on Friday after reaching the moon earlier this week. They cruised along a path that took them past the shadowed, lunar far side to become the farthest-flying humans in history. On the return trip, they will reach speeds of up to 23,839 mph as they enter the Earth's atmosphere, a high-risk phase that will put Orion'...