Astronomers confirm M87* black hole shadow with new interferometric measurement
Researchers analyzed Event Horizon Telescope data from M87* collected in 2017, 2018 and 2021 using an independent interferometric observable to verify the black hole's shadow. The dataset included observations from multiple ground facilities across years, including new participants like the Greenland Telescope, Kitt Peak, and NOEMA, which improved coverage of the radio signal across the sky.