I am curious to know if an astronaut on the Moon ever fell backwards and landed on his back. I have seen many photographs and videos of astronauts who accidentally tripped or lost their balance and fell forward coming down on their hands and knees, but I have never seen a photograph or a video of an astronaut who had been walking backwards and then accidentally tripped or lost his balance and landed on his back.
This makes me wonder if NASA had designed the spacesuit for the Apollo missions so that if the astronaut were to ever lose his balance, the center of gravity of both the astronaut and the spacesuit would always result in the astronaut falling forwards.
Did an astronaut on the Moon ever fall on his back?