NASA’s Fermi Gamma-ray Space Telescope has identified the farthest gamma-ray blazars, a type of galaxy whose intense emissions are powered by supersized black holes
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Most luminous, energetic pair of stars found outside Milky Way
The dual-star system produces a cyclic flood of gamma rays, the highest-energy form of light
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Rare cosmic encounter will trigger space fireworks in 2018, says NASA
Astronomers are gearing up for high-energy fireworks due in just under three years