The radio bursts are energetic enough to suggest that they are triggered by extremely powerful astrophysical events. Evaporating black holes or supernovae might be possible sources.
In their efforts to crack the mysteries of gravity, scientists continue to probe Albert Einstein's theory of general relativity. The latest test involved a curious binary star system.
Scientists spaced thousands of miles apart discovered a super massive black hole inside a quasar some five billion light-years from Earth