Gravity is the only major force in the universe that doesn’t fit into our current quantum framework, driving the pursuit of a grand unified theory of physics. The new test would not be proof or ...

He would later develop the law of universal gravitation. But gravity — that invisible force that draws objects to the center of the Earth — is not uniform across the planet, data shows.

The first is a consequence of the inverse square nature of the gravitational interaction, meaning the force of gravity diminishes with 1/R 2, where R is the distance between two objects.