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Gravity The universal gravitation law has been discovered per Isaac Newton in 1665. The legend says that he found his inspiration in a apple that felt when ha was crossing the tree, or even that ha was resting below at this moment. The gravitation law is: ''Two bodies attract each other with equal and opposite forces; the magnitude of this force is proportional to the product of the two masses and is also proportional to the inverse square of the distance between the centers of mass of the two bodies.'' See Kepler, black hole  |
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