Does Gravity Require Extra Dimensions?

Does Gravity Require Extra Dimensions?Does Gravity Require Extra Dimensions? External link

PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ It’s been 120 years since Henry Cavendish measured the gravitational constant with a pair of lead balls suspended by a wire. The fundamental nature of gravity

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