Scientists have a theory about why no one has picked up signals from alien civilizations?they may be sending each other secret messages buried in background noise. Walter Simmons and Sandip Pakvasa, of the University of Hawaii, say the one sending the message would divide it into two parts, so its photons are sent in opposite directions to mirrors far from the home planet. The mirrors would then redirect the signals to the intended receiver, who would recombine them to reconstruct the message. Then no one?not the receiver or a potential eavesdropper?could locate the sender’s home planet.

Simmons says, “Such photons are distinguishable from the background of stellar photons because they arrive very close together in time. But any eavesdropper, like us, might not realize this and see only the background.”

Some people say we HAVE heard from ET?and our government knows all about it.

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