Roughly four and a half billion years ago the planet Theia slammed into Earth, destroying Theia, melting large fractions of ...

Astronomers say they spotted signs of a giant explosion releasing from a star beyond our solar system, one powerful enough to ...

New research shows that Theia, the planet that collided with Earth and formed the Moon, was a rocky world born closer to the ...

Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby sun-like star, providing a precious peek into the dawn of our own solar system. It’s an unprecedented ...

Searching for life on other planets requires more than just measuring their distances from their stars. A future NASA ...

There are no confirmed exomoons, moons orbiting distant exoplanets in other solar systems. There are a few candidates, but ...

Nearly a century after Pluto’s discovery, astronomers are still hunting for mysterious planets beyond Neptune - including a ...

Water isn't just delivered to planets by comets and asteroids — it can also be forged as worlds form, a new study finds.

Astronomers at NASA and the University of California at Santa Cruz have launched a Web-based project that has amateur astronomers lining up to have a chance to discover extra-solar planets that ...

Astronomers have discovered seeds of rocky planets forming in the gas around the baby sunlike star providing *** peek into the start of our own solar system. The the thing that we've discovered is ...