President Donald Trump’s transportation secretary, Sean Duffy, has ordered NASA to build a nuclear reactor on the moon, just weeks after being named interim head of the space agency. Duffy’s appointment as NASA’s chief administrator came after Elon Musk’s pick for the post,

It’s a power move. The Trump administration aims to accelerate the construction of a nuclear reactor on the moon, Transportation Secretary and acting NASA Administrator Sean Duffy wrote in a memo distributed internally on Monday.