Scientists detected a mysterious object entering the Solar System from deep space — and it immediately started raising ...

The 310-mile-wide celestial body, officially named 2002 XV 93, is classified as a trans-Neptunian object (TNO) because its ...

A comet from another star system is carrying water unlike anything astronomers have ever measured in our cosmic neighborhood.

It's an extremely rare opportunity to spot a "relic from the birth of the Solar System." The post Visitor Approaches From the ...

Even at a glance, the planets in our solar system are wildly diverse. Huge and small, airless and densely packed with ...