Indeed, the first theory of gravity was proven wrong. Einstein's theory of general relativity falsified Newton's law of universal gravitation. If you want to

Indeed, the first theory of gravity was proven wrong. Einstein's theory of general relativity falsified Newton's law of universal gravitation. If you want to take this even further (which is a leap that would certainly upset most people's sensibilities) - Einstein proved that gravity doesn't exist. What does exist is the curvature of spacetime which explains all the phenomena which we used to attribute to gravity. Einstein falsified gravity.