Space
NASA Pushes for Nuclear-Powered Space Missions
The space agency’s Kilopower project could end a half-century hiatus for U.S. reactors in space
The space agency’s Kilopower project could end a half-century hiatus for U.S. reactors in space
Supernovas are thought to be the explosive deaths of stars. So what happens when one is found repeating?
A rare stellar alignment allowed scientists to determine the world’s size and shape—and to discover its rings
