A 100-kiloparsec wind feeding the circumgalactic medium of a massive compact galaxy

Nature, Published online: 30 October 2019; doi:10.1038/s41586-019-1686-1

Theory predicts that winds expel baryons from galaxies into intergalactic space; now optical observations of the massive, but compact, galaxy SDSS J211824.06+001729.4 show that it is ejecting an enormous ionized outflow of gas.

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