Alien signals? More bizarre 'fast radio bursts' detected from outer space

Update::

More “fast radio bursts" – bright, short-lived pulses of radio waves that come from across the universe – have been detected by astronomers. The bursts, which originate from a distant galaxy that's 1.5 billion light years away from Earth, repeated 13 times, a new study reports.

The BBC reports that there are a number of theories about what could be causing the bursts.

Theories include a neutron star with a very strong magnetic field that is spinning very rapidly, two neutron stars merging together, and, among a minority of observers, some form of alien spaceship, the BBC said.

Indeed, some astronomers have considered the idea that these bursts could be signals from intelligent aliens, Science News reported. Whatever their source, scientists think many more sources of repeating bursts will be detected in the future.