Astronomers analyzing M87*, the first black hole ever imaged, have discovered that its shadow changes from year to year. The ...

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 ...

The red DOT line in the chart shows that the centripetal forces of the planets at their respective positions do not correspond to the gravitational law Gravitational force = Centripetal force. The ...

Top panel: M87 jet structure at 43 GHz based on bi-yearly stacking data observed from 2013–2018. The white arrows indicate the jet position angle in each subplot. Bottom panel: Best fitted ...

To observe M87* in detail, the EHT team needed an instrument with an ... The analyses are detailed in Astronomy and Astrophysics.