Astronomy

Fresh observations from the James Webb Space Telescope show how vivid auroras surge through Uranus’s tilted magnetic field

On Thursday the U.S. president ordered the release of federal files related to UFOs and aliens, although no evidence of extraterrestrials visiting Earth is known to exist

How big would a telescope need to be to see Earth’s dinosaurs from 66 million light-years away? Think big—and then think bigger

Astronomers are racing to understand mysterious ancient objects that pepper James Webb Space Telescope images

The collision of supermassive black holes shakes the entire cosmos, hard

Four worlds around a small, dim star are challenging theories of planet formation

A “disappearing” star in the Andromeda galaxy is the closest and best candidate for a newborn black hole that astronomers have ever seen

BlueBird 6 features the biggest commercial communications array antenna ever deployed in orbit around Earth, spanning some 2,400 square feet

Babies show innate rhythm as NASA’s Artemis II mission hits delays, a major solar flare erupts and concerns grow over PFAS “forever chemicals”

The sun is experiencing a violent solar storm, releasing one of the strongest solar flares seen in the past 30 years

After a year of protests from astronomers, authorities have abandoned plans for a giant, light-polluting renewable-energy facility in Chile’s Atacama Desert

The six-year results from the Dark Energy Survey highlight unresolved tensions in standard cosmological theory