Until then, telescopic images of Mars – namely enigmatic dark patches on its surface – triggered the belief that it was home to an alien civilization. But Mariner 4 revealed a barren planet ...

In the 1970s, images from the NASA Mariner 9 orbiter revealed water-sculpted surfaces on Mars. This settled the ...

A stunning new image shows Mars in an entirely new light, revealing intricate details of the Martian surface. The image was released to commemorate 20 years of the European Space Agency's (ESA ...

In the 1970s, images from the NASA Mariner 9 orbiter revealed water-sculpted surfaces on Mars. This settled the once-controversial question of whether water ever rippled over the red planet.