The Artemis II mission suffered another setback over the weekend due to an issue with the flow of helium to its SLS rocket's upper stage. That has forced the space agency to roll the craft away from the launch pad to investigate the issue – and that will, said NASA Administrator Jared Isaacman, "take the March launch window out of consideration."

As NASA tries to get the Artemis II mission off the ground, with its crew of four astronauts, for a flight around the moon, it is struggling with the albatross of the Space Launch System.