Hey. I offer this idea in hopes that somebody with more knowhow can contribute. Basically the idea is this. Scan IR/Microwave/Radio wavelengths for recurring bits of information that can be sorted into a working language. If the language seems that it reveals information in some sort of chronological or even dispersed order then could it be that we'd really discovered a hidden alien language being communicated through the cosmos. To the moderators: I'm putting this in general physics because I'm hoping a discussion about acoustic and standing waves may arise. I'll lead into it. Consider a standing wave sent at time t0. By the time the wave propagates its information to a distance of lets say a few lightyears (the distance of the closest star) the information would most likely, though not necessarily, be doppler shifted to a wavegroup w(f)x)) as opposed to w(f)i)) where the first notation is the wave group function doppler shifted from its original form which is the second notation. These wave groups should have some sort of chronological order unless they are being sent in tandem with older and perhaps also more new news. However...this leaves the possibility that we could intercept precious communications from alien races. Perhaps information about technology that is not kept secret to them like teleportation devices and ultrasonic communicators.