It’s been nearly 2 centuries since a planet was discovered in the solar system. But now scientists think they’ve uncovered ...

Using a cutting-edge adaptive optics system developed at the University of Arizona's Steward Observatory, a growing planet ...

Astronomers have directly spotted a rare young planet, WISPIT 2b, still forming within the gap of a dusty ringed disk around a star like our sun—something long theorized but never observed until now.

Astronomers have discovered what they think may be another moon orbiting a distant dwarf planet called Quaoar. This small, ...

The coldest planet in the Solar System is Uranus, which is surprisingly colder than Neptune due to its unique internal heat ...

Astronomers have picked up evidence of an Earth-sized world, distinct from the previously hypothesised Planet Nine and Planet ...

There’s a bit of a paradox about our galaxy: it’s both jam-packed with stars and cavernously empty. The Milky Way is crowded in the sense that it holds hundreds of billions of stars, as well as ...

This article was originally featured on The Conversation. Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A cloud of ...