(covers information from several alternate timelines)
Edwin "Buzz" Aldrin was a 20th century Human male and an American astronaut and engineer. He was a member of NASA's Apollo program. In 1969, he became the second Human to set foot on Earth's Moon (after Neil Armstrong) during the Apollo 11 mission.
In 2143, after Jonathan Archer was passed up to pilot Starfleet's first warp 2 flight in favor of A.G. Robinson and kept on as backup pilot, Archer compared himself to Aldrin, telling Ruby no one remembered what Aldrin said when he first stepped on the moon since he wasn't the first. (ENT: "First Flight")