Light takes roughly eight minutes to reach Earth from the sun. For that reason, if the sun disappeared, we'd still see it in the sky for another eight minutes. But what about gravity? The sun is the anchor point of the solar system—at 333,000 times the mass of Earth, it exerts a hefty pull that keeps the planets locked in their orbits. If all that gravitational force disappeared, it would still take us eight minutes to feel it. That's because, according to Einstein's theory of relativity, gravity travels at the same speed as light. So go ahead, watch the rest of that Netflix episode. You'll be golden for another eight minutes.
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