sagansense:

spaceexp:

A lot of us have probably seen the Saturn V launches, but the liftoff from the moon is just as impressive.

Little known fact: the liftoff of the Lunar Excursion Module (LEM) was the first time the propulsion system was tested. THE ONLY TIME. If it would have failed, there would have been two very stranded astronauts on the lunar surface. In fact, there was a letter drafted by Nixon in case something of this magnitude happened.

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