Astronomers manning an asteroid warning system caught a glimpse of a large, bright object zipping through the solar system ...

Scientists have observed a new type of black hole that is too heavy to have been born from a star but still too slim to … The ...

Astronomers discovered 3I/ATLAS, a 10–20 km-wide interstellar comet racing into the solar system. It will reach perihelion in ...

We live in a world defined by inches, feet and miles (or centimeters, meters and kilometers, if you prefer), and it’s not difficult for most of us to ...

Long theorized but never observed, the first known “planet with a death wish” is described by Ilin and her colleagues in a ...

The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...

"This tangible evidence of a double detonation not only contributes towards solving a long-standing mystery, but also offers ...

Astronomers have finally caught a dying star in space going out with a bang — and then another bang. The new photographic ...

New observations show a star that blew up in two separate bursts, confirming a long-suspected cosmic phenomenon called a ...

Newfound interstellar object 3I/ATLAS may be carrying pristine material from early in the Milky Way’s star-forming history.

Astrophysicist Josep Trigo-Rodriguez of the Institute of Space Sciences near Barcelona, Spain, believes it is an interstellar ...

"We have discovered a galaxy that has been 'perfectly preserved' for billions of years, a true archaeological find that tells ...