Nature Astronomy, Published online: 15 July 2024; doi:10.1038/s41550-024-02296-7

An extreme Einstein ring ~10,000 times as bright as the Milky Way in the infrared is studied with VLT/ERIS and ALMA, and the authors find that the lensed galaxy is a starburst with a fast-rotating disk, rather than being driven by a major merger.

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