A supermassive black hole violently gobbled up an enormous star, producing a cosmic outburst with the light of 10 trillion suns, according to a new study. The black hole flare, as the phenomenon is ...

If you point your spaceship toward the constellation Leo, fire your thrusters, and travel about 5 billion light-years, you’ll find yourself in the vicinity of the Cosmic Horseshoe, home to what might ...