Researchers at the Arecibo Observatory have detected puzzling signals  coming from a relatively nearby star and they're not quite sure what's  causing them.

The enigmatic pulses appear to be emanating from a star dubbed 'Ross 128,' which is a mere 11 light years from Earth.

Since the signals only seem to be coming from that particular star,  astronomers have ruled out the possibility that the pulses were the  result of some kind of technical error from the telescope that detected  them.

While the cause of the signals has yet to be determined, astronomers  have put forward three possible sources for the pulses, but none of the potential scenarios seem to fit the pulses perfectly.

Find out more on this mystifying story at the Coast to Coast AM website.