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A new explanation for dark energy: the matter in our Universe (Synopsis)

1 Sep 2017, 14:01 UTC
A new explanation for dark energy: the matter in our Universe (Synopsis) NASA, ESA, G. Illingworth (UCO/Lick Observatory and the University of California, Santa Cruz), R. Bouwens (UCO/Lick Observatory and Leiden University) and the HUDF09 Team

Since the expansion of the Universe was first found to accelerate nearly 20 years ago, scientists have yearned for a compelling, simple, and testable explanation. Yet as more and more data from experiments and observations has come in, the cause of this dark energy – the hypothesized cause of the acceleration – has been maddeningly elusive. While it's functionally equivalent to a "cosmological constant" (or the "energy inherent to space itself"), there's no good way to arrive at a prediction for its value. Yet if you consider that putting certain forms of matter in empty space changes the forces on that matter, perhaps dark energy arises from the simplest cause of all: the fact that our Universe contains matter at all.

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