Aliens are visiting our solar system. Not little green men, sadly, but natural alien objects—cosmic bodies such as comets and ...

Miguel Claro took one last look at the comet as it bid farewell to Earth for the next 80,000 years.

Astronomers think small space rocks from beyond our solar system routinely strike Earth—but proving it isn’t easy ...

China's Tianwen-2 probe continues on its journey to rendezvous with a near-Earth asteroid (NEA) before heading to the main asteroid belt. The second in China's interplanetary exploration program ...

The likelihood of a potentially hostile alien threat hitting Earth has been assessed after a scientist's chilling warning ...

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

This year, the alert system for defending the planet against incoming space rocks was activated for the first time. It won’t be the last ...

Every summer, the Perseids meteor shower puts on a celestial display when fragments of space debris vaporize as they fall ...

Impact craters are formed when an object from space such as a meteoroid, asteroid or comet strikes the Earth at a very high ...

NASA has discovered an interstellar comet that's wandered into our backyard. Luckily, it won't get near enough to be a threat to our planet.

Predicting the precise path of a new asteroid or comet is a complex affair; the more observations you have, the better you know where an object will be, years hence.