Acting NASA Administrator Sean Duffy has directed the agency to fast-track plans to put a nuclear reactor on the moon.

NASA’s new directive aims to power the Moon’s shadowy regions—but skeptics wonder what’s really behind the rush.

NASA’s acting administrator Sean Duffy is fast-tracking the agency’s plans to build a nuclear reactor on the lunar surface, a move that highlights the Trump administration’s focus on human spaceflight and establishing a long-term presence on the Moon.