What is a "Gravity Detect Speed Light"? The Most Authoritative Explanation.

What is a "Gravity Detect Speed Light"? The Most Authoritative Explanation.

How fast is gravity compared to light?

Kopeikin and Fomalont concluded that the speed of gravity is between 0.8 and 1.2 times the speed of light, which would be fully consistent with the theoretical prediction of general relativity that the speed of gravity is exactly the same as the speed of light.

How fast is gravity?

Thanks to observations of gravitational waves, scientists were able to settle a longstanding debate over the speed of gravity. Throughout history, scientists have proposed many answers for the exact speed of gravity. Broadly speaking, the two main propositions have been that gravity is either infinitely fast or as fast as the speed of light.

How is the speed of light measured?

The official speed of light is measured as if it's traveling in a vacuum, a space with no air or anything to get in the way. You can most clearly see differences in the speed of light in something like a prism, where certain energies of light bend more than others, creating a rainbow.

How fast does light travel?

We know that light travels at a fixed speed: 300,000 kilometers per second, or 186,000 miles per second. From the known distance between the Earth and the Sun (150 million kilometers, or 93 million miles), we can calculate how long it would take before we here on Earth would know the Sun had disappeared.

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  Bounding the Speed of Gravity: Physicists Make Significant Progress

  2023-05-20
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  Gravity Deformation Caused by Earthquakes

  2023-05-20

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