Source of blazars’ super brightness comes into focus
Jets of high-energy radiation come from near galaxies’ central black hole
![blazar](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/07/ag_blazar_free.jpg?fit=860%2C460&ssl=1)
JET SET An active galaxy called a blazar, illustrated here, emits a jet of high-energy particles toward Earth.
NASA/Goddard Space Flight Center Conceptual Image Lab