The United States is rushing to put nuclear power reactors on the moon and Mars, and hopes to launch the first system by the end of the decade.

Duffy's directive orders NASA to prepare a 100-kilowatt nuclear reactor for launch by 2030, according to Politico. It might seem like an absurd prospect, but it's a necessity for a permanent human presence on the lunar on the Moon.

The acceleration of nuclear development is part of the Trump administration’s efforts to focus NASA on human spaceflight. A reactor would be useful for long-term stays on the moon.