Astronomy

Exploring the hidden rings of the Milky Way

Radio astronomy opens a window onto the invisible universe. While our eyes can detect visible light, countless objects in space emit radiation at much longer wavelengths, in the radio portion of the electromagnetic spectrum. Where […]

Astronomy

Hunting for pairs of monster black holes

When galaxies collide, it’s not a gentle affair, but it does take millions of years. Over this time, the two massive star systems slowly merge together, their gravitational pull drawing them closer. At the heart […]

Astronomy

Greedy black hole feeds via two spiral arms

The supermassive black hole at the center of the Circinus galaxy is being fed with gaseous material by two spiral arms, according to an international team of researchers led by Wout Goesaert (Leiden University, the […]