On January 4, 2004, the first of two identical robotic exploratory rovers, NASA’s Spirit, snapped this stunning 360 degree image of its surroundings, moments after setting down on Mars. In the years to follow, both Spirit and its sister Opportunity helped revolutionise our understanding of the Red Planet.
Opportunity, aka The Little Rover That Could, is still making important discoveries 10 years into its Martian jaunt. After the devastating loss of twin rover Spirit in 2011, Opportunity rallied and kept trekking, only to recently discover a fascinating rock near Endurance Crater.
Even as its twin goes dark, Opportunity soldiers on unabated: The plucky NASA Mars rover, on the planet for seven years now, just passed an impressive 30-kilometre milestone.