Assertion: astronaut's mission | /r/CapableOf | prove to be a cavalcade of firsts
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text: The Apollo 8 mission was scheduled during the Christmas holiday, December 21-27, 1968, and would prove to be a cavalcade of firsts: the first manned mission to leave Earth’s orbit, the first to allow the astronauts to see the Earth as a whole planet, to directly see the far side of the Moon and to witness Earthrise.