Moon landing video & transcript (1969)

With more than half a billion people watching on television, Neil Armstrong climbs down the ladder and proclaims, "That's one small step for a man, one giant leap for mankind."

Ham, the first chimp in space (1961)

Shepard. Glenn. Armstrong. All of them rode on the back of a little 37-pound chimp whose name sounded more like lunch meat than the first primate in space.