Astronomers have discovered the biggest explosion seen in the universe, originating from a super-massive black hole. Scientists reported Thursday that the blast came from a black hole in a cluster of galaxies 390 million light-years away.

The explosion was so large it carved out a crater in the hot gas that could hold 15 Milky Ways, said lead author Simona Giacintucci of the Naval Research Laboratory in Washington. It's five times bigger than the previous record-holder.