Alien search detects radio signals from dwarf galaxy 3bn light years from Earth

Stephen Hawking's Breakthrough Listen project picks up radio pulses that could be from black holes, neutron stars or, some speculate - UFO beacons

Astronomers searching for signals from alien civilisations have detected 15 powerful, repeated radio pulses coming from a dwarf galaxy 3 billion light years away from Earth.

The source of the mysterious signals, known as fast radio bursts, is unknown. Some have proposed they could be emanating from black holes or rotating neutron stars with extremely strong magnetic fields. A more speculative possibility is that they are beacons from extraterrestrial spacecraft.