Saturday, April 11, 2020

maybe not isotropic

I've been hearing rumblings. Some new research is suggesting that the expansion rate of the Universe is not the same in every direction. And if that proves true then it will show the cosmos is not isotropic. The all-sky map by K. Migkas et al. shows differences in the expansion rate.

uneven expansion rate graphic

Red and yellow is fast; purple through black is slow.

Of course, Bad Astronomy Dr Phil Plait explains it all very clearly in a balanced article. It'll be interesting to see how this all plays out.

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