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Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy including planets, stars, galaxies, and even light are brought toward one another. Gravity is the force by which a planet or other body draws objects toward its center. Gravity is one of the most important thing in our life. We can't live on Earth without it. Physicists see gravity as one of the four fundamental forces that govern the universe, alongside electromagnetism and the strong and weak nuclear forces. Gravity is force that two objects with mass exert on each other simply because they have mass. Anything that has mass it has also gravity. Earth also has mass. That's why Earth also has gravity. If we throw some things out of our hands but it comes back down again. The main reason behind it is gravity.
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Sir Isaac Newton was and English mathematician and physicist. He first discovered gravity. He discovered gravity by saw an apple falling from tree. He think that why the apple fall down. He research on it. Then newton called this force "Gravity".
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