In 2019, the Event Horizon Telescope (EHT) Collaboration delivered the first image of a black Hole, revealing M87* - the supermassive object in the center of the M87 galaxy. The EHT team has now used the lessons learned last year to analyze the archival data sets from 2009-2013, some of them not published before. The analysis reveals the behavior of the black hole image across multiple years, indicating persistence of the crescent-like...

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