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Why Nothing Really Matters

Gaping cosmic voids might hold the answers to dark matter, dark energy and the very foundations of the universe.

“Space” is certainly an apt nickname for our cosmos, since there’s a heckuva lot of it out there.

Between here and the moon, about a quarter-million miles away, there’s virtually nothing — just stray hydrogen, helium and the odd dust particle. On far
grander scales, this barrenness becomes unimaginably vast. A desolate, virtually starless, 2.5 million light-year gulf — that’s nearly 15 quintillion miles
— separates our home galaxy, the Milky Way…


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