you never know ..Penzias and Wilson detected a background interference that turned out to be the cosmic background glow from the early universe. then again Fleischman and Pons found cold fusion in a electrochemical cell... it was total crap.. I know from personally studying the expected nuclear reactants and finding nothing that wasn't explained by other reasons. In this case the cells used palladium as an electrode.. the hypothesiswas that paladium loaded enough deuterium to reduced the threshhold for a DD reaction to T or He3.. with T(tritium) detection confirming the reaction. They didn't know that Paladium is used to help produce tritium for nuclear weapons and most us paladium has been through this program. We vaporized paladiumsamples in a mass spec and found tritium in all of them. Then again we built a detection system with the lowest background for neutron detection on the planet.

Hmm well it’d be quite an energy intensive way to say hello, and difficult to modulate

NASA scientists have decifered the signal folks. It turns out it's just polka music from our old Lawrence Well shows with a note attached saying. No thanks, you guys are on your own.

How cool if it was!