"Can We Detect Aliens by Their Space Junk?" Topic

"Despite the best efforts of SETI (Search for Extraterrestrial Intelligence) scientists, aliens have still evaded our detection. That's not entirely surprising. Unless extraterrestrials are purposely transmitting powerful, focused radio signals in our general direction and we're tuned in, there's little to no chance our telescopes would pick up their broadcasts. And so we're left here, alone and listening.

Clearly, SETI could use a few new tricks, and in a recent article published to the arXiv preprint archive, astrophysicist Hector Socas-Navarro of the Canary Islands Institute of Astrophysics in Spain provides one…"
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Amicalement
Armand

Unless extraterrestrials are purposely transmitting powerful, focused radio signals in our general direction and we're tuned in, there's little to no chance our telescopes would pick up their broadcasts. And so we're left here, alone and listening.

Or…they are using more advanced communications systems, beyond the EM spectrum, such as quantum communications using entangled paired devices…in which case our radio broadcasts are no more intelligible than smoke signals from a tribe in the Amazon would be to someone flying over head at 30,000 feet in a jet liner…

Good comparison!

Dan

I suspect that aliens capable of interstellar travel are, as SBminisguy suggests, using communications devices that we can't detect and that don't notice our transmissions. There are probably also other aliens out there who are using actual smoke signals, which we are unable to notice.

(smile)

Amicalement
Armand