Something I just learned about which I thought was pretty cool. The last man on the surface of the moon, Eugene Cernan, wrote his daughter’s initials on the surface of the moon.

Since there is no atmosphere on the moon the initials will last forever. It was during the 1972 flight of Apollo 17, his second flight to the moon, (he was on Apollo 10) he wrote, with his finger, ‘TDC’ into the dust.

Before the lunar module was set to leave the surface of the moon, Cernan drove the lunar rover about a mile away from the capsule to set-up a camera to video of the lunar module leaving the moon. After the camera was set he dropped to one knee and wrote the initials on the surface.

factfiend.com