In a groundbreaking discovery beyond Pluto, scientists have detected a small celestial body that could alter our perception ...

Is there a massive undiscovered planet on the outer reaches of the Solar System? The idea has been around since before the ...

A curious, icy and distant object has just been discovered far beyond Pluto. Nicknamed Ammonite, it intrigues astronomers ...

Uncover fascinating and lesser-known facts about our solar system! Discover why you can't stand on Uranus, which moon has ...

A study has suggested that this motion of our star through the galaxy potentially takes us through regions of space that could affect our planet's climate. According to the study, the Solar System may ...

The caldera may have blasted out its cryomagma in a single explosive event, or it may have spread its eruptions over time.

Prior to this our pictures, even with the Hubble telescope, have been of this sort of greenish, mushy pea. And now we can see craters and dark patches over the surface," Dr. Walkowicz said.

But are these really "planets," or was Pluto merely the first discovery of an entirely new class of objects? In 2006, the International Astronomical Union, the gatekeepers of astronomical nomenclature ...

Summary "Orbiting at the edge of the outer Solar System, Pluto is an intriguing object in astronomy. Since the fascinating events surrounding its discovery, it has helped increase our understanding of ...

(CNN) — A newly discovered object speeding through our solar system is sparking excitement among astronomers because it’s not from around here. Believed to be a comet, the object is only the third ...