Only 11 million light-years from Earth, Centaurus A is the nearest galaxy powered by a supermassive black hole that emits radio waves. The galaxy also sends out jets of charged particles and appears to have swallowed a smaller galaxy 100 million years ago (SN: 5/16/98, p. 311). Now, astronomers have found further evidence that Centaurus A is a maelstrom of violence.
Note: To comment, Science News subscribing members must now establish a separate login relationship with Disqus. Click the Disqus icon below, enter your e-mail and click “forgot password” to reset your password. You may also log into Disqus using Facebook, Twitter or Google.