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Alien technology could also potentially self-replicate. They can be found far from any planet or moon or floating space habitat, just like the Voyagers. Technosignatures don’t have to stay grounded. The way it is set up suggests that we are more likely to find biosignatures, even if the life that gives them off is not intelligent.īut wait. This remains an unsolvable equation and runs into some issues when it sometimes ends up favoring biosignatures over technosignatures. Spawned by the ongoing search for extraterrestrial radio signals, it is supposed to give us an idea of how many detectable alien societies, at least those able to transmit messages, could be out there.
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Earthlings also aren’t going to recognize the biology of life as we never knew it.Įnter the Drake equation. It is already obvious that organics can be deceiving. That makes it seem like alien hunters would be much more likely to find biological signs of life, which may still be eons away from morphing into anything intelligent, but then the ambiguity of biosignatures gets in the way again. We are the only one we know of in the universe - for now. It took 4 billion years after life emerged on Earth for an intelligent species to evolve. “Communicative signals are the most unambiguous,” he told SYFY WIRE. “If we saw a narrowband radio or laser transmission, there's just no way it could be natural. Then, the only ambiguity is if it has somehow come from our own technology.” Researcher Jason Wright of Penn State University, who led a study recently published in The Astrophysical Journal Letters, thinks that we have a better chance of finding aliens through technosignatures. Maybe the biological signatures of alien life-forms are not even remotely close to life as we know it.
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What look like fossils from another world can turn out to have been formed by chemical processes, and organic substances on or around a body in space don’t necessarily mean something is actually living there. The thing is that biosignatures can be ambiguous. Any civilization that has survived that long without self-destructing can probably do better than a hodgepodge of office equipment set up on a tripod. Whatever extraterrestrial technology is like, it’s probably much more advanced than the “radio” Resident Alien's Harry Vanderspiegle comes up with to transmit signals to his home planet, though he only hears from a random pizza place. Maybe we need to shift our focus from biosignatures to technosignatures. Are we really alone in the universe, or could it be we haven’t been searching for the right signs of an intelligent species beyond Earth? Aliens have still eluded us no matter where we look.