In something straight out of an episode of Doctor Who, a Mars orbiter has spotted what appears to be a swarm of spiders crawling across the red planet's surface. These "spiders" were recently ...

"Shorelines are great locations to look for evidence of past life." Today, Mars is a chilly desert of rock and dust — but 4 billion years ago, the planet had rivers, lakes and even oceans with sandy ...

An image snapped by NASA's Mars rover has sparked theories of aliens on the Red Planet. The photo shows what many ... to be casting a shadow on the ground. People have likened 'the object ...

These images, captured by the European Space Agency's (ESA) Mars Express orbiter and the ExoMars Trace Gas Orbiter, actually show seasonal eruptions of carbon dioxide. These "spiders" are not ...