2 abril 2015
NASA’s Hubble Space Telescope has photographed a set of wispy, goblin-green objects that are the ephemeral ghosts of quasars that flickered to life and then faded. The eight unusual looped structures may offer insights into the puzzling behaviors of galaxies with energetic cores.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/Ul1rMhIe_o4/150402114653.htm
