Only on Earth. Not the Moon, or Jupiter.
And yes--you are wrong. Gravity is, scientifically speaking, a theory.
How fast they fall on the moon, jupiter, wherever... that is an OBSERVATION, a law. Why they are attracted to each other would be the theory of gravity.
You don’t know the simple difference between a scientific law and a theory.
Gravity is, scientifically speaking, a theory.
***There are dozens of theories of gravity. There is ONE law of gravity.
> Only on Earth.
Not necessarily. Try, on any planet with a mass equivalent to earth’s, and only approximately, for several reasons, including accuracy, regional variation to factors such as density and opposing centrifugal force presuming the affected object is rotating in sync with the earth’s rotation.