Sol 4004, April 30, 2015. If the enigmatic dark feature named Spirit of St. Louis were a clock face, Opportunity would currently be at about 4 o’clock. This four-frame Navcam composite looks toward the northwest across the dark infill in Spirit of St. Louis Crater. The view spans from the Athens outcrop (the bright patch in the distance at left) past the Meridiani Planum horizon to Cape Tribulation’s summit, the Lindbergh rock stack, and Swann Hill at right. (Click the image to load a larger version in a new tab.)
Opportunity raw images, its latest mission status, a location map. and atmospheric opacity, known as tau.