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Prakhar Maurya @mphysicus.bsky.social · 07/12/2025

Discovery of "Alaknanda": A massive, grand-design spiral galaxy found just 1.5 billion years after the Big Bang! Found by Rashi Jain and Yogesh Wadadekar (NCRA-TIFR) using #JWST data. Its well-formed spiral arms challenge our understanding of how quickly galaxies settled into stable disks.

Left panel: Image of Alaknanda in rest-frame near-ultraviolet filters.
Right panel: Alaknanda as seen in rest-frame optical filters.
Credit: NASA/CSA/ESA, Rashi Jain (NCRA-TIFR)

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Prakhar Maurya @mphysicus.bsky.social · 07/12/2025

Paper link: www.aanda.org/articles/aa/...

aanda.org

A grand-design spiral galaxy 1.5 billion years after the Big Bang with JWST | Astronomy & Astrophysics (A&A)

Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics

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