Herschel Space Telescope observations of I Zwicky 18 (I Zw 18), a ragtag irregular galaxy in the relatively nearby universe, has enabled an international team of astronomers to make new assumptions about dust in galaxies very near the dawn of time. In a paper to be published in the journal Nature, the team details comparative observations of I Zw 18 to conclude that Himiko, a highly-redshifted blob of a galaxy thought to have formed only 850 million years after the Big Bang, has a factor of 100 times less dust than previously expected.
Lack Of Dust In Earliest Galaxies Baffles Astronomers
Bruce Dorminey, Contributor, Forbes
Sun, 10/27/2013 - 1:12am
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