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<small>For the [[astronomy]] term, see [[Outer space]]</small>
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'''Space''' is, in its simplest terms, the [[geometry]] of three [[dimension]]s. In [[mathematics|mathematical]] theory, spaces with more or fewer than three dimensions can be described, although these cannot exist in the real universe.
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'''Space''' is, in its simplest terms, the [[geometry]] of three [[dimension]]s. In [[mathematics|mathematical]] theory, spaces with more or fewer than three dimensions can be described, although these cannot exist in the real universe.
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[[Outer space]] is the physical realm beyond the Earth's atmosphere.