This image is of space shuttle Atlantis and its Orbital Boom Sensor System robot arm extension backdropped against Earth's horizon and a greenish phenomenon associated with Aurora Australis.
This image is of space shuttle Atlantis and its Orbital Boom Sensor System robot arm extension backdropped against Earth’s horizon and a greenish phenomenon associated with Aurora Australis. One of the station’s solar array panels appears at upper left. Because of the exposure time needed for this type of photography, some of the stars in the background are blurred.Image Credit: NASA