Martian anomalies

Strange anomalies found on the surface of Mars, which suggest that the planet had once been home to intelligent life.

Above: the rock (right) and the view taken by the rover just days before (left)

NASA Shock As Mysterious Rock ‘Appears’ On Mars Next To Opportunity Rover

A mysterious rock has appeared in front of a robotic rover on Mars – and Nasa has no idea how it got there