Gravity is a fundamental force of nature that causes objects with mass to attract one another. It is one of the four fundamental forces in the universe, alongside electromagnetism, the strong nuclear force, and the weak nuclear force. In everyday terms, gravity is what gives weight to physical objects and causes them to fall towards the Earth when dropped. The strength of the gravitational force between two objects depends on their masses and the distance between them.
In 2020 physics, best explained by general relativity.
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