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LandSat 8 supermoon comparison LandSat 8 snaps a lunar calibration image each month when the moon is about 8 degrees past full. The left image was captured on Dec. 17, 2013, when the moon was near apogee. The image on the right is a supermoon, and was captured near the moon's perigee on July 12, 2014. U.S. Geological Survey