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Gravity's role is to keep the planets in orbit and balance.
As a result of these portrayals, many people believe that there is zero gravity in space. However, this statement could not be further from the truth. Gravity exists everywhere in the universe and is the most important force affecting all matter in space. In fact, without gravity, all matter would fly apart and everything would cease to exist. Gravity is the attractive force between two objects at a fixed distance r.