Evidence that early galaxies may be bigger and more complex than previously thought

Scientists using the Atacama Large Millimeter/submillimeter Array (ALMA)-- an international observatory co-operated by the U.S. National Science Foundation's National Radio Astronomy Observatory (NRAO)--have observed a significant amount of cold, neutral gas in the outer regions of the young galaxy A1689-zD1, as well as outflows of hot gas coming from the galaxy's center. These results may shed light on a critical stage of galactic evolution for early galaxies, where young galaxies begin the tra...