According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density ...

A team of astronomers took an actual photo of the first-known baby planet discovered in a gap of a star's protoplanetary disk.

We all need some space sometimes—but it's harder to find than you might think. How far into our universe do we have to go to ...

Thirty years ago, on a crisp October day in 1995, two Swiss astronomers changed the course of cosmic history. Michel Mayor and Didier Queloz, working at the University of Geneva, announced the ...

Spaceships are a staple of big-screen sci-fi, from recent superhero movies back to early 20th-century films. Here are some of the all-time most iconic.

Rogue planet Cha 1107-7626 is swallowing gas and dust at roughly six billion tons each second, the fastest planetary growth ...