During the earliest days of crewed spaceflight, many doctors harboured concerns about what effects zero-gravity would have on the human body. While many of these concerns did not and have not come to fruition, one particular problem continues to linger: 'Space Adaptation Syndrome'.
Although Apollo 9 did not travel to the Moon, it still had a very important role to play in the lead up to the first lunar landing. Here are 10 reasons why it deserves more recognition.
Alan Shepard's road to the Moon was not a straightforward one, so you can't blame him for wanting to have a little fun on the lunar surface. He joked in later life that he was probably better known as 'the astronaut who played golf on the Moon' than he was as the first American in space.
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.
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.