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Gravity holds almost everything together; the planets, our solar system, essentially everything 'big' in our universe.

For Earth, if gravity was suddenly 'switched off', the Earth would expand as everything that was densely held together by gravity suddenly separates. The atmosphere would dissipate, everything would turn into a giant chaotic cloud of matter.

On the atomic scale however not much would change. Atoms would still exist, as would molecules and probably some collections of them too. On such a small scale where everything is so close together and mass is so insignificant gravity is not as significant a force as it is in our day to day lives. At this scale we get what are called the 'strong' and 'weak' nuclear forces taking control along with electrostatic forces, holding the atomic nuclei together and keeping electrons orbiting, and other very important things.

So if we did not gravity, we would cease to exist. But on the atomic scale not much would change.

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13y ago
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12y ago

Without Gravity, there would be no life at all on Earth. There would also be no Earth, since planets are held together by gravity.

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Q: How would your life be if there were no gravity on Earth?
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