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A theory can become a fact by demonstrating that it is a phenomenon that can be repeated.It was once a theory that heavier objects fall faster than lighter ones.Then someone discovered that air slows down feathers much more than it does anvils, by testing this theory in a vacuum.And now we all know that all things fall at the same rate, unless slowed down by the atmosphere.
A theory can become a fact by demonstrating that it is a phenomenon that can be repeated.
It was once a theory that heavier objects fall faster than lighter ones.
Then someone discovered that air slows down feathers much more than it does anvils, by testing this theory in a vacuum.
And now we all know that all things fall at the same rate, unless slowed down by the atmosphere.