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dark universe
Explainer: The Mysterious Dark Energy That Speeds the Universe’s Rate of Expansion
The nature of dark energy is one of the most important unsolved problems in all of science. But what, exactly, is dark energy, and why do we even believe that it exists?
Enormous Hole in the Universe May Not Be the Only One
Astronomers have found evidence of a giant void that could be the largest known structure in the universe.
