"NASA’s Lunar Reconnaissance Orbiter (LRO) satellite, tasked with mapping the Moon’s surface from lunar orbit for a decade, does achieve sufficient resolution to spot the shadows of three Apollo flags. In fact, LRO’s cameras can see objects as small as 20 inches on the surface of the Moon, sufficient to positively identify the extended shadows streaming from the Apollo 12, 16, and 17 flags."
"Lunar Reconnaissance Orbiter cameras reveal the shadow of the Apollo 16 flag, showing it is still on the lunar surface"
"Photo courtesy of Arizona State University and NASA"