science
Drop a feather and a stone at the same time on the Moon.
On the Moon, a feather and a stone dropped together land at exactly the same moment, because the Moon has no air. Gravity pulls every object down at the same rate no matter how heavy or light it is — it's only air resistance that normally slows light, fluffy things down.
Since there is no air on the Moon to push back against the feather, nothing gets in its way and it falls just as fast as the heavy stone, landing together rather than the stone winning or the feather floating down slowly like it would on Earth.
Astronauts actually tried this exact experiment on the Moon with a hammer and a feather, and everyone watching was amazed to see both hit the ground at the very same instant, just like this simple rule predicts.
science
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