Is NASA going to put a nuclear reactor on the moon? Here's what Sean Duffy said about U.S. race against China in space and going to Mars.

Nuclear reactors on the moon work in much the same way as reactors on Earth, according to Bhavya Lal, a former associate administrator for technology, policy and strategy at NASA. A controlled nuclear reaction in uranium fuel is used to generate heat that in turn can be used to make electricity.

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