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It isn't currently known how large the Universe is. It may be thousands of times larger than the OBSERVABLE Universe, or it may even be infinite.The size of the observable Universe is hard to imagine, because the scales are much, much larger than anything we encounter in our daily lives. The diameter of the observable Universe is somewhere around 93 billion light-years (which we might round to 100 billion - 10 to the power 11 - for a quick calculation); each light-year has about ten to the power 16 meters. Multiply that together, and you get approximately 10 to the power 27 meters. That's a one, followed by 27 zeros. (This is just a rough estimate.)

Once again, all this is just the observable Universe, and we don't really know how much larger the entire Universe is.

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