Soufriere Hills, Montserrat
It must be exciting to be able to catch a volcano in the act of eruption from that far above -- one of the few places that humans lives that can't be adversely effected by volcanic activity. In this image, Soufriere Hills is producing a healthy ash plume and pyroclastic flow deposits are clearly seen forming deltas on multiple sides of the island volcano.
Image: Courtesy of the Image Science & Analysis Laboratory, NASA Johnson Space Center / Taken October 11, 2009.