One of the fundamental physical forces of nature, it binds objects together on the macroscopic scale. Mass produces a gravitational force, which attracts all other masses. The more massive an object, the stronger the gravitational force. The late Industrial/early Atomic Age physicist Einstein showed in his theory of general relativity that gravity can be explained in terms of local curvature of space-time.
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Development Notes
Text by M. Alan Kazlev
Initially published on 31 October 2001.