NASA’s Curiosity rover has photographed a knobbly Martian rock that looks strikingly like a piece of ocean coral, a reminder ...

The Atlantic island of Bermuda has long looked like a geological magic trick, a lonely volcanic peak apparently hovering in the middle of the ocean with no obvious engine beneath it. Now a new picture ...

Seismic data collected by NASA suggests the amount of water hidden in the red planet's crust would cover its surface in a global ocean. Evidence is mounting that a secret lies beneath the dusty red ...