The nylon American flag planted on the Moon during Apollo 11 cost $5.50, was knocked over by exhaust from the Lunar Module’s ascent, and is likely disintegrated by four decades of heat, UV rays and radiation.
Apollo 11 astronauts had to declare moon rocks through customs upon return to Earth.
Jupiter’s moon Europa has more water than Earth. Its subsurface ocean plus ice layer could range from 80 to 170 kilometers in average depth.
The moon smells like gunpowder.
Moon dust is so abrasive that during the Apollo missions it reeked havoc on astronaut’s space suits. In one case it actually ate through three layers of Kevlar.
Buzz Aldrin’s mother’s maiden name: Moon.
Astronomers have reported seeing lights, hazes and other phenomena on the surface of the moon. This is known as Transient Lunar Phenomena.
Asteroids can have a moon.
The halo that sometimes appears around the moon is caused by refraction through ice crystals in the atmosphere.