> The emission is powered by a central black hole in the galaxy Centaurus A, about 12 million light years away. > As the black hole feeds on in-falling gas, it

> The emission is powered by a central black hole in the galaxy Centaurus A, about 12 million light years away. > As the black hole feeds on in-falling gas, it ejects material at near light-speed, causing ‘radio bubbles’ to grow over hundreds of millions of years.