Astronomy

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

An exoplanet called HD 137010 b might be the closest thing astronomers have ever seen to “Earth 2.0.” The trouble is that it’s only been seen once—and may never be glimpsed again

The venerable Hubble observatory is going strong despite its decades in space and the advent of next-generation successors

Astronomers puzzled out minuscule distortions in images of faraway galaxies taken by JWST in order to chart the invisible