Solar system

Astronomers are puzzled by a ring around the icy dwarf planet Quaoar that is much farther from its parent body than thought possible

Satellite navigation systems for lunar settlements will require local atomic clocks. Scientists are working out what time they will keep

The sun is unleashing powerful outbursts that could strike Earth, but these events are far more common—and much less worrisome—than some hyped headlines suggest

Scientists find that magnetic fields and turbulence amplify each other inside stars’ hidden layers, slowing down the stellar cores’ spin

Much of North America can witness a delightful astronomical event on the evening of December 7 as the moon blocks out Mars

Elon Musk’s Starlink and other satellite sources of light pollution and orbital debris should face an environmental review, the U.S. Government Accountability Office finds

The Orion spacecraft passed just 130 kilometers above the lunar surface during a mission-critical engine burn

An investigation by agency historian finds no evidence explicitly linking former director James Webb with anti-LGBT+ actions

Around the world, researchers are betting that beamed power from space could be the next big thing for clean energy on Earth

Divers working on a television documentary were searching for a downed World War II aircraft when they instead discovered the NASA artifact

A trial of how government, NASA and local officials would deal with a space rock headed toward Earth revealed gaps in the plans

China’s Tiangong orbital outpost will host more than 1,000 experiments, some of which will augment results from the International Space Station