Copernicus Crater Mosaic, NASA Lunar Science Institute
"This mosaic of the floor of crater Copernicus was created by combining the following 24 high resolution images taken by Lunar Orbiter V on 16 August 1967. By comparing old images of the Moon to recent images, LOIRP offers a time machine of sorts, whereby changes in the lunar surface over the past half century can be identified. LOIRP has also done original science by comparing their highest resolution images with the latest high resolution lunar images to look for changes that could indicate quakes, meteor impacts, or volcanism. But more work remains to be done."
Keith's note: Please Support Lunar Orbiter Image Recovery Project (LOIRP) at RocketHub