Nicknamed 'the Brain', Ed Mitchell was the second ever astronaut to have a PhD. On his way to and from the Moon in 1971, he took part in a psychic experiment designed to see if it was possible to transmit and receive thoughts across tens of thousands of miles.
Gemini 6A is best known for achieving the first ever rendezvous in space, a key stepping stone in the journey to the Moon. That wasn't the only 'first' it achieved, though.
All things considered, it was pretty ironic that Apollo 12 was headed for an area of the Moon known as the Ocean of Storms. Pete Conrad, Dick Gordon and Alan Bean launched into thundery skies in November 1969 and less than a minute later were struck by not one, but two bolts of lightning.
"It's your neck, and I hope you don't break it." Apollo 7 is often overlooked in the grand scheme of things, with no technological dramas to speak of. When it came to the crew, though, things were not so cleanly cut.
Gemini 12 was the last in the programme, with Jim Lovell and Buzz Aldrin tasked with ensuring it ended on a high. The mission included the first completely successful spacewalk, thanks in large part to a completely new style of training.