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 officials said Sunday that the crew, Space Launch System rocket and Orion capsule are ready to launch the Artemis II mission to circle the moon.

Ahead of the launch of the historic Artemis II mission around the moon, here's everything you need to know.