NASA’s new moon rocket has suffered another setback, with astronauts’ lunar trip now off until spring. The next opportunity for humanity's first moonshot in more than half a century is April. The space agency revealed the latest problem on Saturday, a day after targeting March 6 for liftoff of the Artemis II mission. Officials say that overnight, the flow of helium to the rocket's upper stage was interrupted. Unrelated fuel leaks caused earlier delays. NASA Administrator Jared Isaacman says work to prepare for a possible return to the hangar means March is now out of consideration for a launch.