Astronomers have discovered strong evidence for the closest supermassive black hole outside of the Milky Way galaxy. This ...

Stars orbit the centers of galaxies. But beyond that, things get a little harder to visualize. Do galaxies — and, ...

"Black holes are so stealthy that this one has been practically under our noses this whole time." ...

The moon, the Milky Way, Saturn, Venus, Jupiter Mars, Neptune, Uranus and comet C/2024 G3 are all visible at once in ...

The disc of plasma surrounding the black hole at the heart of the Milky Way is constantly emitting flares both large and small.

Planets, asteroids and comets orbit more massive stars, and stars collect around supermassive black holes, forming galaxies.

This appears to be the closest supermassive black hole outside our Milky Way galaxy, according to a report that's appearing ...

This stunning photo was taken on January 29, 2025, from 265 miles (425 km) above the Pacific Ocean. Pettit, a seasoned ...

The shot of our planet and the great cosmos beyond offers an eerie sense of scale to our quotidian situations on Earth.

Researchers from the Center for Astrophysics, Harvard & Smithsonian have found compelling evidence of the nearest ...

Astronomers have discovered that billions of comets in an icy shell around the solar system called the Oort Cloud mimic the ...

A SpaceX Falcon 9, carrying the SPHEREx and PUNCH missions, is scheduled to lift off on Tuesday, March 4 at 10:09 p.m. ET.