It's possibly as big as Manhattan, likely older than our own solar system, and it's traveling through space at speeds of up to 153,000 miles per hour.

Discovered in July this year, the comet known as 3I/Atlas is only the third confirmed object to visit our corner of the cosmos from another star. But there is an opposing view that "is difficult to ...

Astronomers measure the speed at which the solar system is hurtling through space by mapping surrounding galaxies and ...

On July 14, 2015, NASA's New Horizons spacecraft arrived at Pluto for the first time. The craft flew within 7,700 miles of the planet and is sending back reams of data and the highest resolution ...

Explore the vastness of the Solar System in this video, which accurately showcases the relative sizes of the planets and ...

Take a journey to the outer edges of the solar system and discover how planets, comets, and icy fragments form an invisible architecture that defies the idea of above and below. Learn how the Kuiper ...

Astronomers have spotted an intriguing cluster of objects in the Kuiper belt, an enormous, donut-shaped region of icy objects ...

CAPE CANAVERAL, Fla. (AP) — NASA has discovered an interstellar comet that’s wandered into our backyard. The space agency spotted the quick-moving object with the Atlas telescope in Chile earlier this ...

The outer planets of the solar system are swarmed by ice-wrapped moons. Some of these, such as Saturn's moon Enceladus, are ...