Astronomers watch a supermassive black hole turn on for the first time
The observation will help researchers better understand active galactic nuclei
![illustration of black hole turning on](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2024/06/061824_am_black-hole_feat.jpg?fit=1030%2C580&ssl=1)
A supermassive black hole in galaxy SDSS1335+0728 has lit up, possibly giving astronomers a look at how such beasts are awakened.
M. Kornmesser/ESO