META WORLD PIECE On April 23, 1972, Apollo 16 astronaut Charles Duke left something behind on the lunar surface: a plastic-wrapped photo of him and his family. Duke took this photo of that photo as it rested on the dusty surface next to one of his boot prints. (Photo: NASA via The Telegraph)
Tracks
This image from NASA’s Lunar Reconnaissance Orbiter shows the tracks, scientific equipment and yes, trash left behind by the Apollo 17 mission in 1972. (Photo: NASA LRO via MSNBC.com)
