eldavojohn writes: New observations from NASA's Fermi Gamma-ray Space Telescope reveal that our assumptions about the 'fog' of gamma rays in our universe are not entirely explained by black hole-powered jets emanating from active galaxies--as we so previously hypothesized. For now the researchers are representing the source of unaccounted gamma rays with a dragon (as in "here be") symbol. A researcher explained that they are certain about this given Fermi's observations, 'Active galaxies can explain less than 30 percent of the extragalactic gamma-ray background Fermi sees. That leaves a lot of room for scientific discovery as we puzzle out what else may be responsible.' And so we reopen the chapter on background gamma-rays in the science textbooks and hope this eventually sheds even more light on other mysteries of space--like star formation and dark matter.
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