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World Heritage site on the moon? Not as spacey as it sounds

On Sept. 13, 1959, a day that we can pretty much guarantee was clear and sunny on the moon, the Soviet Union crash-landed its Luna 2 spacecraft in a region east of what is known to Earthlings as the Mare Serenitatis. A decade later, the U.S. landed the first human beings on the moon in the Mare Tranquillitatis. The Soviets left the wreckage of their unmanned craft where it landed, but the Apollo 11 Lunar Module known as the Eagle — after 21.5 hours on the surface of the moon and walks by astronauts Neil Armstrong and Buzz Aldrin — reconnected with Apollo 11 so the astronauts could return home, leaving behind a U.S. flag, a plaque and human boot prints, which remain, incongruously enough, visible in the lunar dust nearly half a century later.