B-flat In The Dark Heart Of Perseus

Quote: “In the dark heart of the Perseus galaxy cluster, 300 million light-years from Earth, a supermassive black hole has been singing the same note for 2.5 billion years. Its tone registers 57 octaves below middle C and, according to scientists at NASA’s Chandra X-Ray Center, is a resounding B-flat. Yet, how is this possible in the vacuum of space? When relativistic jets, which contain material moving at close to the speed of light, slam into the hot gas that pervades giant elliptical galaxies and clusters of galaxies, they beat a ‘galactic drum,’ as it were. The jet acts as the stick, whereas the surface of the gas is the drum.”

There is currently a vote before the Galactic Senate to rename the entire area “The Ringo Quadrant.” Check out this Scientific American article for more. The image was adapted from here.

10.29. filed under: science. space. 1