Lunar preservation

(MSNBC) - The moon is sprinkled with historical hardware hurled from Earth that signifies the pioneering steps taken over decades in robotic and human exploration of Earth's celestial next-door neighbor.
But numbers of spacefaring nations, including commercial enterprises, are readying their respective assaults on the moon.
That fact has sparked growing concern about safeguarding lunar heritage sites, keeping them free of future "Kilroy was here" graffiti-like abuses. Continued

Photos: NASA