Something quite curious has been discovered on Mars. NASA rover Opportunity has sent back images of spherical formations that have scientists stumped. The pictures taken at the rim of the Endeavour crater, are unlike anything seen before. Mars is known for a particular formation dubbed “blueberries”. The theory being that these “berries” formed long ago when water was present, interacted with minerals, and over time erosion formed their bulbous shape. These tiny new formations seem to have a hard outer crust encasing a soft interior, and unlike “blueberries” a low iron content. Though not earth shattering news, scientists are pondering their brains out….
Photo from spaceweather.com