Our technology is too primitive to detect an advanced Alien civilization
Some of the world’s leading astronomers believe aliens, rather than using different radio waves or visible light to signal, may be using an entirely different communication medium such as neutrinos or gravitational waves (ripples in the fabric of space-time) or using communication mechanisms we cannot even begin to fathom.
“The fact that we have not yet found the slightest evidence for life — much less intelligence — beyond this Earth,” said Arthur C. Clarke, “does not surprise or disappoint me in the least. Our technology must still be laughably primitive, we may be like jungle savages listening for the throbbing of tom-toms while the ether around them carries more words per second than they could utter in a lifetime.“Lord Rees, a leading cosmologist and astrophysicist who is the president of Britain’s Royal Society and astronomer to the Queen of England believes the existence of extraterrestrial life may be beyond human understanding.
“They could be staring us in the face and we just don’t recognize them. The problem is that we’re looking for something very much like us, assuming that they at least have something like the same mathematics and technology. I suspect there could be life and intelligence out there in forms we can’t conceive. Just as a chimpanzee can’t understand quantum theory, it could be there as aspects of reality that are beyond the capacity of our brains.”
“I think it very likely – in fact, inevitable – that biological intelligence is only a transitory phenomenon… If we ever encounter extraterrestrial intelligence, I believe it is very likely to be postbiological in nature, wrote Arizona State’s Paul Davies in “The Eerie Silence”. Davies suggests that advanced technology might not even be made of matter. That it might have no fixed size or shape; have no well-defined boundaries. Is dynamical on all scales of space and time. Or, conversely, does not appear to do anything at all that we can discern. Does not consist of discrete, separate things; but rather it is a system, or a subtle higher-level correlation of things.
“Are matter and information,” Davies asks, all there is? Five hundred years ago, Davies writes, “the very concept of a device manipulating information, or software, would have been incomprehensible. Might there be a still higher level, as yet outside all human experience, that organizes electrons? If so, this “third level” would never be manifest through observations made at the informational level, still less at the matter level.
We should be open to the distinct possibility that advanced alien technology a billion years old may operate at the third, or perhaps even a fourth or fifth level -all of which are totally incomprehensible to the human mind at our current state of evolution in 2012.
Frank Drake, the founder of SETI and Drake’s Equation, believes that satellite TV and the “digital revolution” is making humanity invisible to aliens by cutting the transmission of TV and radio signals into space. The earth is currently surrounded by a 50 light year-wide “shell” of radiation from analogue TV, radio and radar transmissions. According to Drake, digital TV signals would look like white noise to a race of observing aliens.
Although the signals have spread far enough to reach many nearby star systems, they are rapidly vanishing in the wake of digital technology, said Drake. In the 1960s, Drake spearheaded the conversion of the Arecibo Observatory to a radio astronomy center. As a researcher, Drake was involved in the early work on pulsars. Drake also designed the Pioneer plaque with Carl Sagan in 1972, the first physical message sent into space. The plaque was designed to be understandable by extraterrestrials should they encounter it.
Milan Cirkovic of the Astronomical Observatory in Belgrade, has pointed out that the median age of terrestrial planets in the Milky Way is about 1.8 gigayears (one billion years) greater than the age of the Earth and the Solar System, which means that the median age of technological civilizations should be greater than the age of human civilization by the same amount. The vastness of this interval indicates that one or more processes must suppress observability of extraterrestrial communities.
Since at this point, there is no direct and/or widely apparent evidence that extraterrestrial life exists, it likely means one of the following:
We are (A) the first intelligent beings ever to become capable of making our presence known, and leaving our planet. At this point, there are no other life forms out there as advanced as us. Or perhaps extraterrestrial life does exists, but for some reason extraterrestrial life is so very rare and so very far away we’ll never make contact anyway — making extraterrestrial life nonexistent in a practical sense at least.
Or is it (B) that many advanced civilizations have existed before us, but without exception, they have for some unknown reason, existed and/or expanded in such a way that they are completely undetectable by our instruments.
Or is it (C) There have been others, but they have all run into some sort of “cosmic roadblock” that eventually destroys them, or at least prevents their expansion beyond a small area.
Since Earth’s placement in space and time appears to be unremarkably random, proposition “A” seems fairly unlikely. Assuming humans evolved like other forms of life into our present state due to natural selection, then there’s really nothing all that mystical, special or remarkable about our development as a species either. Due to the sheer numbers, there are almost certainly other planets capable of supporting at least some form of life. If that is so, then for Earthlings to be the very first species ever to make a noticeable mark on the Universe, from a statistical perspective, is incredibly unlikely.
For proposition “B” to be correct would defy all logic. If potentially thousands, or even millions of advanced extraterrestrial civilizations exist in the known Universe, then why would all of them, without exception, choose to expand or exist in such a way that they are completely undetectable? It’s conceivable that some might, or perhaps even the majority, but for all of them to be completely undetectable civilizations does not seem likely either.
Proposition C in some ways, appears to be more likely than A or B. If “survival of the fittest” follows similar pathways on other worlds, then our own “civilized” nature could be somewhat typical of extraterrestrial civilizations that have, or do, exist.
The idea communicating with aliens comes with concerns. British astrophysicist Stephen Hawking has warned that communicating with aliens could be a threat to Earth: “If aliens visit us, the outcome would be much as when Columbus landed in America, which didn’t turn out well for the Native Americans.”
“The Three Body Problem” by science fiction Hugo Award winner, Liu Cixin, depicted the universe as a jungle with every civilization as a hidden hunter. Those who are exposed will be eliminated.
But Han Song, another leading Chinese science fiction writer, believes humans naturally want to connect, citing the Internet as proof. “I think aliens might think similarly. It is a biological instinct to connect with each other. Everyone wants to prove that they are not alone in the universe. Loneliness is intolerable to humans,” he says.
Song also points out that the contact will be driven by curiosity and real requirements. “Humans will ultimately go to space to find resources and expand their living area, so it will be hard to avoid aliens. Contact with them, especially those with more advanced intelligence, may help us leap forward in civilization.”
Regardless of the theoretical debate, scientists have never wavered in the search. “I think we shall call out. As a matter of fact, we have been yelling for years, and our radios and televisions are broadcasting in space all the time,” says Mao Shude, director of the Center for Astrophysics of the Beijing-based Tsinghua University. “Aren’t you curious what our counterparts would look like?
“If they are inferior or equal to us in terms of civilization, we won’t be easily destroyed. If they are much more intelligent than us, they wouldn’t be so narrow-minded as to compete with us. Some worry they will come to rob us of our natural resources, but they likely have the power to transform the entire globe already. What’s the point of eliminating a much lower civilization?”
Mao believes the result will be significant however it turns out. “If we find other life, it will undoubtedly be the most important scientific discovery in our history; if not, it shows that life on Earth is unique and we should respect life and cherish each other.”No matter the outcome, we shall never stop searching.”