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What has gravity led scientists to understand?

User Ram Vennam
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Answer:

Gravity is a non-contact force that was observed famously by Sir Isaac Newton, who watched an apple falling from a tree to the ground. ... Newton was the first to realise that gravity existed in space and it was the force which holds the Moon in orbit around the Earth and planets in orbit around the Sun.

User Mephy
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Answer:

Newton's theory had prove that all objects, as small as an apple and as large as a planet, are subjected to gravity. Gravity helped to keep the planets rotating around the sun and creates the ebbs and flows of rivers and tides.

User Ned Howley
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