NASA History Office
@NASAhistory
This is the NASA History Office's official X account. We're happy that you share our passion for aerospace history.
가입 June 2010
164 팔로잉 중 1.2M 팬
Testing Galileo's law of motion on the Moon!
55 years ago today, Apollo 15 astronaut David Scott performed his feather and hammer experiment on the Moon, demonstrating that without air resistance all objects fall at the same rate.
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