A comet from another star system is swinging by Mars as a fleet of spacecraft trains its sights on the interstellar visitor ...

I f you’ve ever wanted to see a chunk of the early solar system with your own eyes, now’s your chance. The comet C/2025 A6, ...

A UCLA astronomer who leads planetary defense missions for NASA says avoiding asteroid impacts is “a problem we can ...

A comet traveling outside the solar system and heading toward the Earth is much larger than scientists first believed, a ...

I/ATLAS stands apart from other interstellar objects because of its size as well as pace, and will soon disappear from ...

Something strange is moving through our solar system — and scientists are scrambling to figure out exactly what it is.