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This single frame from a sequence of images shows sunspots as viewed by NASA Curiosity Mars rover from June 27 to July 8, 2015; the rover was in position to see the opposite side of the sun from the side facing Earth during this period. One sunspot seen in this series emerged while under Curiosity's view, subsequently rotated out of view over the July 4 weekend. That sunspot's location showed up a few days later observable from Earth's point of view as an area of solar eruptions and source of a coronal mass ejection. The coronal mass ejection affected interplanetary space weather, though not …
