This 2012 simulation of voids merging as cosmic structure evolves is now borne out by data from the Sloan Digital Sky Survey.
Credit: J. Hidding, R. van de Weygaert, Univ. Groningen / http://arxiv.org/abs/1205.1669 (2012)
Vast regions of near-empty space in the Universe are growing and shrinking, much as bubbles merge and separate in soapsuds, astronomers have discovered.
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