Artemis II astronauts simulate their launch day

Canadian Space Agency Jeremy Hansen, second left, and his Artemis II crewmates, NASA astronauts Victor Glover, Christina Koch and Reid Wiseman, successfully completed the first in a series of integrated ground system tests in preparation for the mission around the Moon. They stand on the crew access arm of the mobile launcher at Launch Pad 39B, where they will be launching from. (Credit: NASA)