Title: The Galaxy Zoo survey for giant AGN-ionised clouds: past and present black-hole accretion events Authors: William C. Keel, S. Drew Chojnowski, Vardha N. Bennert, Kevin Schawinski, Chris J. Lintott, Stuart Lynn, Anna Pancoast, Chelsea Harris, A.M. Nierenberg, Alessandro Sonnenfeld, R...
Shortly after Galaxy Zoo was launched to the general public a primary-school teacher discovered a curious blue object now known as "Hanny's Voorwerp. Read more