How do you safely move a 5.75 million-pound, 322-foot-high rocket more than 4 miles from the assembly building to the launch pad and back?

NASA is in the process off rolling its towering Artemis 2 moon rocket back to its hangar after more than a month at Launch Complex-39B at the Kennedy Space Center due to a helium system issue.

Artemis 2 will send four astronauts — NASA's Reid Wiseman, Victor Glover and Christina Koch, and the Canadian Space Agency's Jeremy Hansen — on a roughly 10-day trip around the moon and back to Earth.