Imagine standing by a lake and throwing a stone into the water. Waves spread out in circular patterns and can reflect at ...

The ‘Martian dichotomy’ is one of the Solar System’s greatest mysteries – but new research in closing in on a solution.

The Antarctic ice sheet is nearly twice the area of Australia and holds enough freshwater to raise global sea levels by 58 ...

A mysterious airstrip being built on a remote island in Yemen is nearing completion, according to satellite photos analyzed ...