NASAS Fermi Measures Cosmic Fog Produced by Ancient
19 of 108

NASA'S Fermi Measures Cosmic 'Fog' Produced by Ancient Starlight

January 11, 2013
Fermi measured the amount of gamma-ray absorption in blazar spectra produced by ultraviolet and visible starlight at three different epochs in the history of the universe. (Credit: NASA's Goddard Space Flight Center)

comments powered by Disqus