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What is the gravitational constant?

The gravitational constant describes the intrinsic strength of gravity, and can be used to calculate the gravitational pull between two objects.

Also known as “Big G” or G, the gravitational constant was first defined by Isaac Newton in his Law of Universal Gravitation formulated in 1680. It is one of the fundamental constants of nature, with a value of (6.6743 ± 0.00015) x10^–11 m^3 kg^–1 s^–2 (opens in new tab).

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