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Ka Driver
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If the sun suddenly disappeared, we wouldn't know it for about eight minutes because that's how long it would take the light to travel the distance between the sun and the earth.
But I've often wondered; if the sun suddenly disappeared, would the Earth continue in its orbital path around the sun for eight minutes, or would it immediately fly off into outer space, off its orbital path around the sun, the instant that the sun disappeared?
Does gravity travel at the speed of light? I guess we won't know the answer to this question until we figure out what gravity is.
kadriver
But I've often wondered; if the sun suddenly disappeared, would the Earth continue in its orbital path around the sun for eight minutes, or would it immediately fly off into outer space, off its orbital path around the sun, the instant that the sun disappeared?
Does gravity travel at the speed of light? I guess we won't know the answer to this question until we figure out what gravity is.
kadriver