Chorus of Black Holes Sings in X-Rays0

• From Around the Web, Space
• July 28, 2016

Supermassive black holes in the universe are like a raucous choir singing in the language of X-rays. When black holes pull in surrounding matter, they let out powerful X-ray bursts. This song of X-rays, coming from a chorus of millions of black holes, fills the entire sky — a phenomenon astronomers call the cosmic X-ray background.