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Access through your institution Buy or subscribe The first image of a black hole shadow graced the front pages of newspapers around the world when it was released by the Event Horizon

Telescope (EHT) collaboration in 2019. Here the EHT team follows on from that groundbreaking result, presenting re-imaging of the same supermassive black hole M87* using data from the

subsequent observing run, in April 2018. Significant improvements have been made since the initial observations, and this second run benefitted from increased bandwidth and a wider frequency

coverage in part due to the addition of the Greenland Telescope to the network. The new data enable confirmation of the size and shape of the asymmetric ring-like structure observed

previously, with a consistent diameter of ~42 μas across both runs. However, a significant change is seen in the position angle of the bright spot in the ring, which shifted by about 30°

relative to the earlier result. This is a preview of subscription content, access via your institution ACCESS OPTIONS Access through your institution Access Nature and 54 other Nature

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AFFILIATIONS * Nature Astronomy https://www.nature.com/natastron/ Morgan Hollis Authors * Morgan Hollis View author publications You can also search for this author inPubMed Google Scholar

CORRESPONDING AUTHOR Correspondence to Morgan Hollis. RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Hollis, M. The persistent ring of M87* confirms

predictions. _Nat Astron_ 8, 152 (2024). https://doi.org/10.1038/s41550-024-02215-w Download citation * Published: 15 February 2024 * Issue Date: February 2024 * DOI:

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