Artist’s conception of the Spiderweb. In this image, the protogalaxies are shown in white and pink, and the blue indicates the location of the carbon monoxide gas in which the protogalaxies are immersed. CREDIT: ESO/M. Kornmesser. This figure is licensed under CC BY 4.0 International License.
Astronomers studying a cluster of still-forming protogalaxies seen as they were more than 10 billion years ago have found that a giant galaxy in the center of the cluster is forming from a surprisingly-dense soup of molecular gas. “This is different from what we see in the nearby Universe, where galaxies in clusters grow by cannibalizing other galaxies...
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