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Why does this galaxy look older than its years? | Space


February 25, 2021
To the extent that we can see them, galaxies in the very early universe should look relatively young and unformed. But galaxy ALESS 073.1 is a surprise to astronomers: it looks more mature than we’d have any reason to expect. Why?
Galaxy ALESS 073.1, located 12 billion light-years away and formed when the universe was only 10% of its current age, has not only a large bulge but also a rotating disk, going against common understanding of galaxy formation. This image, observed with the ALMA telescope, is incredibly detailed for such a distance. Image via Federico Lelli et al./ UBC.
Astronomers have found a mightily surprising early-universe galaxy that appears more mature than it should for its age. They announced this result on February 11, 2021, pointing out that galaxy ALESS 073.1 is located about 12 billion light-years away. That means we see this galaxy as it was when the universe was only 1.2 billion years old, or 10% of its current age. At such ....

Federico Lelli , Cardiff University School Of Physics , Cardiff University , Arcetri Astrophysical Observatory , Chilean Andes , Hubble Deep Fields , Atacama Large , Galaxy Looks Older Than Its Years Aless 073 1 , கார்டிஃப் பல்கலைக்கழகம் பள்ளி ஆஃப் இயற்பியல் , கார்டிஃப் பல்கலைக்கழகம் , சிலியன் அண்டெஸ் , ஹப்பிள் ஆழமான புலங்கள் ,