"The detection of heavy water … proves the water's ancient heritage and provides a missing link between clouds, disks, comets ...

Astronomers are watching a new comet pass through our solar system with great interest. Based on its glow, the 33-billion-ton ...

An alien comet passing through our solar system made its closest approach to Mars recently, and two European robotic ...

A newly discovered warp in the outer Solar System may have been created by a small, rocky world, much closer to the Sun than ...

Is interstellar object 3I/ATLAS an alien probe or a natural comet? Explore the compelling scientific evidence, from its tail to its chemical makeup, that debunks the myths.

A new study led by UNLV scientists sheds light on how planets, including Earth, formed in our galaxy—and why the life and ...