Using data from the Vera C Rubin Observatory, experts have revealed just how big the object, dubbed 3I/ATLAS, really is.

Scientists have issued a concerning update on a mystery interstellar object travelling through our solar system.

The object, named NGC 6099 HLX-1, first appeared in 2009. Chandra caught the bright X-ray flash near the galaxy’s outskirts.

As scientists wait for the asteroid to reappear, its revised trajectory is now drawing attention to another possible target: ...

Astronomers may have found a rare intermediate-mass black hole outside galaxy NGC 6099—offering clues about how bigger black holes form.

It’s a bird. It’s a plane. No, it’s a Starlink satellite.” That was the refrain ringing around social media as sky watchers gazed in amazement at the string of glowing lights racing across the early ...

The problem now is there’s a multiplying number of companies launching these things,” Rick Fienberg said. “And there are no formal regulations for visual brightness of satellites.” ...