NASA announced plans to build a nuclear reactor on the moon on Tuesday, in an attempt to stay ahead of China and Russia in a new space race. The goal is to have the reactor built before 2030, a timeline set during the Biden administration.

If you want to know where the next nuclear reactor is being built, you may have to look up at the stars. Transportation Secretary and interim NASA Administrator Sean Duffy is moving forward with a plan to construct nuclear reactors on the moon in the hopes of expanding American influence in outer space.

Placing an atomic energy source on the lunar surface is “not science fiction,” experts say, but does pose technical challenges.