Gamma rays are known to be produced by some of the most energetic objects in the universe, including supernova explosions, pulsars and around black holes
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
Hunt for dark matter expands thanks to NASA space telescope
Using six or more years of data from NASA’s Fermi Gamma-ray Space Telescope, the search for the elusive material has been broadened with some novel approaches
Could an exploding star kill all life on Earth?
We find out if a supernova could kick-start a mass extinction