ALMA Spots Two Young Milky Way-Like Galaxies in Early Universe

Astronomers using the Atacama Large Millimeter/sub-millimeter Array (ALMA) have observed a pair of massive, dusty galaxies seen when the Universe was only 8% of its current age. These progenitors of today’s spiral galaxies are surrounded by ‘super halos’ that extend many tens-of-thousands of light-years beyond their disks.

The astronomers initially detected the two galaxies — which are officially designated ALMA J081740.86+135138.2 and ALMA J120110.26+211756.2 — by studying the intense light from even-more-distant quasars.

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