On Wednesday, the crew of NASA's Artemis II could blast off on a mission around the moon and back. No astronaut has ventured out to the moon since the 1970s. NASA astronauts could be just days away from blasting off towards the moon for the first time since 1972, when Apollo astronaut Eugene Cernan took his last steps in the gray lunar dust. As soon as Wednesday, a four-person crew could launch on a missi... [5658 chars]