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10 of the most memorable space photos

This photo shows helmets and spacesuits covered in lunar dust after the last manned moonwalk, from the 1972 Apollo 17 mission.

Photo: NASA

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Moon dust

In some cases, the meaning behind a photo eclipses its aesthetic qualities. That may be the case for a photo of helmets and spacesuits covered in lunar dust after the last manned moonwalk, from the 1972 Apollo 17 mission. "It symbolizes NASA at its best, and our exploration aspirations for the future," said Southwest Research Institute planetary scientist Alan Stern, who chose the photo.