The giant planets weren't always where we find them today. Jupiter, Saturn, Uranus and Neptune formed in a more compact ...

In an unprecedented celestial event, NASA's Hubble Space Telescope (HST) captured the dramatic aftermath of colliding space ...

Hot Jupiters were once cosmic oddities, but unraveling how they moved so close to their stars has remained a stubborn mystery ...

The discovery marks a significant moment for a theory that was once dismissed as fringe science but is now gaining serious scientific traction. Panspermia is far from a modern invention. The concept ...

A vast ring of rocky leftovers between Mars and Jupiter, the asteroid belt preserves clues to how the planets — and Earth ...

A massive collision between two asteroid-sized bodies around a nearby star offers a rare look at the violent process of ...

A pair of nascent planets have been caught smashing together around the nearby star Fomalhaut, and in doing so have solved the puzzle of its famous ‘planet’ ...

NASA's Hubble Space Telescope has gotten a rare peek at the aftermath of two cosmic collisions — and helped scientists solve ...

Eight possible cave openings found on the Martian surface look to have once had ancient streams flowing into them, suggesting they are promising places to look for evidence of life ...