August 2, 1971: In a tribute to Galileo, Apollo 15 astronaut Dave Scott performs the hammer-and-feather drop. The feather is 44 times lighter than the hammer, but with no air resistance, the objects fall at the same rate.
audio transcript:
Well in my left hand I have a, a feather. In my right hand, a hammer. And I guess one of the reasons, uh, we got here today, it was because of a gentleman named Galileo a long time ago, who made a rather significant discovery about falling objects in [and?] gravity fields, and we thought that, uh, where would be a better place to confirm his, uh, findings than on the moon? And, uh, so we thought we’d try it for ya. And the feather happens to be appropriately a falcon feather, for our Falcon. And I’ll uh drop the two of them here and hopefully, they’ll hit the ground at the same time.
[drops hammer and feather]
How ‘bout that!
[some garbled audio] Mr Galileo was correct in his findings.





















