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Is the gravitational constant really a constant?

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Scientists have been measuring the universal gravitational constant, G, for hundreds of years. But, how accurate are they in their measurements? Is G truly a constant? It’s a question physicists and astronomers continue to debate. Due to variations in experimentally obtained values for G, a number of postulates have been proposed which note that G may vary with time, and could be dependent on orientation, surrounding masses, even the curvature of space time!

Complicating matters, experimental error in the determination of G is typically estimated at 1%, even with modern measuring equipment. Is G really a constant? Does it vary within this +/- 1% window? Is Newton’s Law of Universal Gravitation complete, or is there more to it? Recent studies continue to explore and debate these questions.


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Guest Elliott56


nope, everyone knows the only real constant is the speed of light!

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