From 'Alien Sex Toy' to 'Tadpole': Tweeps Puzzled By Bowling Pin Shape on Mars Caught by NASA Rover

NASA's Curiosity rover was launched on 26 November 2011 and landed the following year to explore the Gale crater on the Red Planet as part of the agency's Mars Science Laboratory (MSL) mission, since then sending data and stunning raw images of the barren giant.