The astronauts will arrive about 10,300 kilometers beyond our satellite, breaking all previous records for distance from Earth. But how was their route chosen?

NASA's Artemis II is set to launch Wednesday evening from Cape Canaveral, Fla. The four astronauts are preparing for liftoff at 6:24 p.m. EDT.

NASA has an online Artemis II tracker for those who want to follow along as four astronauts venture around the moon on an Orion capsule.