NASA has encountered a slight problem with their Mars rover called Curiosity. The problem isn't a very good one either because Curiosity is refusing to move.
NASA has released a new report that reveals that Curiosity has temporarily stopped moving. So why did this happen? Curiosity is equipped with a series of safety regulations that have been implemented into the rover to ensure its safety when traversing the dangerous landscape of Mars. Curiosity measures the surroundings relative to its body before making a move, and some of these measurements are the current altitude, surrounding rock formation, slope steepness, etc.
Before any movement is made by Curiosity, all of these measurements have to be evaluated and deemed 'safe'. If one of these safety checks are calculated to be 'not safe' then Curiosity won't turn on its motor and remain still, which is exactly what the rover has just done. In the report, NASA says that "Curiosity lost its orientation" because "Some knowledge of its attitude was not quite right, so it couldn't make the essential safety evaluation". Curiosity relayed this information back to NASA, and NASA began forming a plan to inform Curiosity of its surroundings correctly.