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Here are some thoughts on the nature of gravity. Gravity: the force of attraction between all masses in the universe. Gravitation requires at least two masses in space. After a long enough timeline, all of the masses in the universe will collapse into one "singularity". In the event of a singularity gravity must then cease to exist, as it exists between multiple masses. If gravity ceases to exist, the energy restrained will expand. Hence, the big bang.