From another blog of mine.
Aristotle (384 BCE – 322 BCE) said heavier bodies fall faster than lighter ones, and so does common sense. But in fact, the speed of a falling body increases by the same rate independently of its mass or weight. It was needed a mind like the one from Galileo Galilei (1564 – 1642) to unveil it, and it was a bitter pill to swallow for some of the powerful of his time.
Galileo was able to understand that, without the resistive forces of air, the rate at which the falling speed of a body increases is independent of its mass or weight. Although the phenomenon has been observed several times on earth under vacuum conditions, in August 1971, astronaut David Scott (pictured in the video bellow), the commander of the Apollo 15 mission, took with him to the moon a feather and a hammer. At the end of the last…
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