Scientists reveal glaciers may have scraped away miles of Earth's crust during 'Snowball Earth,' erasing a billion years of ...

The sheer number of objects suggests scientists will soon have to grapple with what counts as a moon versus what’s just a ...

Astronomers have discovered a panoply of new moons orbiting Saturn, bringing the ringed gas giant's total up to 274 moons—far ...

Mars just dropped a surprise golden nugget —literally. Curiosity accidentally cracked open an ordinary-looking rock, only to ...