ScienceAlert on MSN

Hidden Ancient River System Found Deep Under The Surface of Mars

Ground-penetrating radar reveals a long-lost river system hidden under the surface of Mars. (NASA/JPL/UCLA/UiO/ETH Zurich) ...
Yahoo

City-size 'cosmic butterfly' carved into Mars' surface contains traces of ancient water

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. The European Space Agency ...