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The Case for a Small Universe
Astronomers don't know if the Universe is finite or infinite. Whatever the case, it's larger than the Observable Universe, which measures 93 billion light-years across. A new paper proposes that the actual Universe is comparatively tiny, not much bigger than its observed size - just a few orders of magnitude larger. A smaller Universe solves some problems with other theories of cosmology, including inflation and the amount of dark energy in the Universe.
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