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Space

Metal Content in Early Galaxies Challenges Star Forming Theory

by Press on May 17, 2016

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A galaxy observed in this study — A galaxy observed in this study (surrounded by a blue rectangle). The light we received from the galaxy in the distant Universe tells us – from hydrogen, oxygen, and neon emission lines – that they followed a different rule to produce the heavy elements. (CREDIT: 3D-HST / NASA / ESA / STSCI)