Neutrinos – extremely light, ghostly particles that barely interact with matter – have so far only been observed originating from supernovae (exploding stars) and the sun. Now a giant detector at the South Pole has discovered that a “blazar”, a galaxy with a supermassive black hole at its centre, also produces neutrinos.
http://theconversation.com/scientis...ing-up-another-window-into-the-universe-99785