Bok
11-02-2012, 05:42 PM
Photons leave their mark in high-energy radiation from powerful galaxies
More... (http://www.sciencenews.org/view/generic/id/346207/title/Astronomers_spot_leftover_light_from_ancient_stars)
More... (http://www.sciencenews.org/view/generic/id/346207/title/Astronomers_spot_leftover_light_from_ancient_stars)