As should be obvious, the earth would go dark and would slingshot out of the solar system. But when would the earth stop feeling the sun's gravity and tumble out of its orbit?
The answer to these questions depends on the speed of gravity, which is more accurately called "the speed of gravitational waves". Einstein's theory of General Relativity predicts that the speed of gravitational waves exactly equals the speed of light in a vacuum. This is not a coincidence. In modern physics, all massless particles/waves travel at the speed of light in a vacuum.
This includes gravitational waves which propagate changes in the gravitational field, light waves which propagate changes in the electromagnetic field, and gluons which propagate changes in the strong nuclear force field. In fact, the phrase "speed of light" can be misleading as it seems to make the light look special. A better name would be "the universal speed limit", or "the speed of massless particles".
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Video Editor: Team 121 Creators ([ Ссылка ])
Narration: Sidhart Viyapu ([ Ссылка ])
Project Head: Rajkumar Shukla ([ Ссылка ])
Production: World Of Science Media ([ Ссылка ])
Information Source: Dr. Christopher S. Baird
What if Sun Disappears? How Long Can We Survive?
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