Our solar system is a weird place. Much more than a home to eight planets, it’s filled with a myriad of fascinating other smaller bodies, including moons, asteroids, and comets. In recent decades, ...

Astronomers have found a compact solar system whose planets line up in a way that, according to current models, should not be possible. Around the small star LHS 1903, a dense rocky world orbits on ...

Deep within the Kuiper belt, some small worlds look like they were assembled from two mismatched snowballs pressed together.

The BBC's new five-part series shines a light on the 'extraordinary events' happening out in space When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works ...

Astronomers have found a rocky planet where it should not exist, orbiting far from a cool red star. Could this strange ...

Oh, we humans do love a cleanly defined boundary, don’t we? They make things easier, after all. If we’re trying to categorize something, knowing what labeled bin to put it in is handy. If we’re ...

Introduction: NASA's solar system exploration paradigm : the first fifty years and a look at the next fifty / James L. Green and Kristen J. Erickson -- Part I. Overview. Exploring the Solar System : ...

Since the 1990s, scientists have discovered approximately 6,100 planets outside our solar system, called exoplanets.

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 ...