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Galileo Galilei Proven Right

On one of the Moon missions, NASA astronauts decided to prove Galileo Galilei right.

He reasoned that if there was no atmosphere, no dragging force then two objects of different mass falling from the same height would hit the ground at the same time.

The astronomer drops a hammer and a feather on the surface of the Moon.

This science video contains:
ground, force, nasa, moon, galileo galilei, astronaut, atmosphere, gravity, hammer, feather