http://www.mnn.com/earth-matters/sp...ical-radio-waves-deep-space-baffle-scientistsIf the radio bursts do turn out to be beacons from extraterrestrials, which is a possibility that can't be ruled out, then there are some exciting but scary scenarios to consider. FRBs would not be easy messages to send. The amount of energy required to send such powerful bursts from another galaxy is hard to fathom. Such alien technology would be far more advanced than anything we can imagine, with the ability to harness power equivalent to the sun.