It really seems like our universe could be part of a hypersphere, but... it's probably not
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If higher dimensions exist, they aren't what you think | Exploring Worlds Beyond Our Own
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What math and science cannot (yet?) explain
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The things you'll find in higher dimensions
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How Gravity Actually Works
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Things get weird at infinity
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Why Shouldn't The Universe Exist?
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Perfect Shapes in Higher Dimensions - Numberphile
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