a notch more sophisticated than Newton's 17th-century approximation of gravity as a force between two objects with mass. In ...

Yes.Ooh! Good catch.But what exactly is gravity? Gravity is a force of attraction between any two objects.When you let go of the apple, it's pulled down towardsthe centre of the Earth. No matter ...

When gravity is stronger, the objects—a.k.a. test masses—fall ... The difference in acceleration between the two clouds tells scientists where gravitational anomalies lie.

This mission will pave the way for groundbreaking observations of everything from petroleum reserves to global supplies of fresh water. Researchers from NASA's Jet Propulsion Laboratory in ...