On left, this composite simulated image shows how M87* is seen by the Event Horizon Telescope at 86 GHz (red), 230 GHz (green), and 345 GHz (blue). On right, 345 GHz is seen in dark blue ...

Side-by-side simulated images of M87* show the improvement in clarity and resolution from 230 GHz to 345 GHz. These improvements are allowing scientists to measure the size and shape of black ...

state-of-the-art technologies and persistent research are for scientific progress." More information: The persistent shadow of the supermassive black hole of M87, Astronomy & Astrophysics (2025).

The Changing Shadow of M87* In 2019, the EHT collaboration released the first-ever image of a black hole, a “fiery doughnut” ...