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10 possible reasons why we have not found aliens
One physicist Enrico Fermi wondered: Where is everybody? Or, more precisely, “where all the aliens?”. Thus arose the Fermi paradox. When we evaluate the size of the universe, the number of Earth-like planets, as well as a number of other variables (listed in the Drake equation), it becomes clear that in one galaxy must be tens of thousands or more extraterrestrial civilizations. And because the galaxy about 10 billion years, intelligent worlds there is enough time to communicate with each other. So if aliens exist statistically, where are they? Why can not we find them?
Earth – special
The hypothesis of a unique Earth suggests that the chain of events that created life on this planet was so complicated that only biologically perfect whirlwind could create it elsewhere. Although there may be Earth-like planets, none of them may not contain exactly the conditions necessary for the development of life. In other words, we have not met any aliens, because they simply do not, or they are so few and so far that the contact is extremely unlikely.
The main factor that makes the Earth hospitable to life, it is a long period of relatively stable climate conditions due to the unique orbit and the position of the planet. If it were not for our exact position relative to the Sun or the Moon, the planet would be too hot or too cold, not enough oxygen and too unstable conditions to support life outside the bacteria.
Paleontologist Peter Ward and astronomer Donald Brownlee were the first to introduce the unique Earth hypothesis. And though it’s been 15 years since the birth of the hypothesis, and we found a lot of Earth-like planets, scientists still believe that the chances of life on these worlds is extremely low.
At any intelligent life is a stumbling block
According to the theory of the Great Filter, alien life does exist, but intelligent life is not able to advance technologically far enough to invent a cosmic connection or long-range space travel. Although our modern spaceships, satellites and radio say that we are close to the point of no return, perhaps we inevitably awaits barrier or catastrophe that either destroy us, or lead to the degradation of technologies.
We know that the catastrophic natural disasters periodically visit the Earth, so it is possible that these same events destroy worlds everywhere, sending intelligent life back into the stone age, before the technology will be able to adequately develop. Or, perhaps, we will destroy ourselves in a nuclear war. Whatever the filter, we are just waiting for the bad news. We are not only able to communicate with other astronauts, but also to die, probably.
There is a bright side to this theory. Some believe that we – the first to pass through the filter, so most likely become the dominant race in outer space. And that’s good.
They’ve gone from the universe
According to the hypothesis of superiority futuristic John Smart, intelligent extraterrestrial life once existed in our universe, but it has become so advanced that moved to better places. To be more precise, the aliens have evolved so much that they stopped to look at outer space, and focused on the domestic.
Concept can be compared to the miniaturization, which we observe in computers. Initially, they were conceived as a huge technology that fill entire rooms, but then became less (up to pocket), while simultaneously developing the complexity and power. For supporters of the theory of the superiority of intelligent life develops in much the same way, always working on a more compact and efficient use of space, time, matter and energy. In the end, we will live and work at the nanoscale, until we are so small that they create and settle into a black hole out of this space-time continuum.
According to Smart and others, black holes – the final destination. They will allow common computing and training, travel time, energy production and more. Civilization, which do not achieve this, doomed.
Other cosmic beings can also work on their own superiority, or transcendence. In addition, following Moore’s Law , these creatures, rather achieved excellence before master the cosmos.
The Earth is not as great as we think
Perhaps it would be too proud to believe that aliens are interested in us or our planet. There may be more interesting inhabited worlds and intelligent beings would rather spend their time on their research rather than on Earth. This theory is completely opposite of the theory of unique Earth: our planet there is nothing special.
Extraterrestrial civilization that can move or communicate in light-years, is unlikely to worry about our existence – we do not talk to the flies. In addition, it will definitely be your smart technology, so our meager resources they do not need. If they need the minerals or other elements in the cosmos is full of them, and without the Earth.
In addition, no matter how intelligent beings travel light years – not an easy feat. What are the chances that they will spend their energy trying to see us when there are 8.8 billion Earth-like planets around the Milky Way? The followers of this theory argue that to think that the Earth – a piece of cake, it suffers from the same geocentrism, which led to an erroneous persecution of Galileo.
We live in a virtual reality
Perhaps one of the most difficult to read an explanation of the Fermi paradox – a hypothesis planetarium. Our world is a form of “planetarium in virtual reality, created to give us the illusion that the universe is empty. ” We found no extraterrestrial civilizations because these extraterrestrials have not included it in the program.
The foundations of this theory are rooted in the ideas of Descartes, who asked the question: “How can we know that the world around us is real, if we – just a brain in a vat who thinks that he lives in the real world?”.
Instead of placing the brains in a vat, modern proponents of these ideas think that we live in a computer simulation created by advanced aliens. These aliens use enough energy to manipulate matter and energy on a galactic scale. Why would they want to watch us like ants? Maybe, just for fun, or maybe just to make sure that they can.
You’d be surprised, but philosophers and physicists very serious about this idea . They say that we will soon find ourselves in artificial intelligence fabricated world than having their own minds. In addition, we are likely to find the simulation as accurately observe a system crash or develop an adequate experiment to confirm this theory.
We live in the depths of space
Although reasonable extraterrestrial life may exist, our planet may be too far apart to communication were justified or possible. Land may be so far from other inhabited worlds, that we simply can not see. If this is not enough to feel lonely, some would argue that most of the other worlds are relatively close to each other and interact, while we are behind this pangalakticheskoy Party.
The roots of this idea go back to the mathematical theory known as percolation, which describes how things are drawn in a random environment. If we take as the basis of percolation theory, the universe was formed naturally in the form of large clusters and several smaller areas. Other sentient beings live in large clusters, and the Earth is isolated.
Instead of trying to make contact with these beings, some like Stephen Hawking believe that we need to hide. Hawking said that if we get an extraterrestrial signal, we need to be extremely careful not responding until not a single. Otherwise, we can repeat the fate of Native Americans after the arrival of Columbus.
We have not found their signals
Scientists like Frank Drake and Carl Sagan’s claim that “the absence of evidence – it is not evidence of the absence of aliens.” The hunt for extraterrestrial life is severely limited the lack of government funding, which requires that the scientists could afford a vast arsenal of tools and resources to track aliens. Historically, the program search for extraterrestrial intelligence (SETI) relies only on leased radio telescopes and other equipment, which can be used for a limited time. These obstacles have made real progress impossible.
There is good news for those who think that contact with extraterrestrial life – a good idea. Radiotelescope Allen Telescope Array, designed specifically for the search for extraterrestrial life, began working in 2007. This giant telescope, consisting of 42 individual 6-meter telescopes, has largely been built thanks to the Microsoft co-founder Paul Allen. After many setbacks, he finally began to make their important work. If something will attempt to contact Earth, he finds out about this.
We can not recognize their signals
Even if other planets hospitable to life, whether being there develop similarly life on Earth? Maybe they’re so different from us that we can not distinguish their signals? It is possible, if you remember, for example, about the bats, which can visualize the sound waves, although we only see the light. Perhaps the aliens and we are equipped with a fundamentally different set of feelings.
As the cosmology and astrophysics, Lord Martin Rees, “they can look us in the face, and we just do not recognize them. The problem is that we are looking for something that is very similar to us, has a similar math and technology. I suspect that life and mind can exist in forms that we can not even imagine. ”
Things get even more complicated when trying to contact a highly race that uses other methods of communication (neutrinos, for example, or gravitational waves) that are inaccessible to our understanding of technology. Similarly our primitive radio can not be greater than the white noise for them. If the aliens and humans are unlike, it is unlikely that we will be able to contact them and resolve the Fermi paradox – on the condition that we will continue to anthropomorphism aliens and expect that they will contact us.
Superorganism suicidal in nature
Medea hypothesis invented by paleontologist Peter Ward, says that humans and other super-organism carry the seeds of self-destruction. In some ways, it links well with the theory of the Great Filter, as it implies that we will die before we can contact with an extraterrestrial civilization.
The hypothesis is named after Medea from Greek mythology who killed their children. In our case, the planet – it’s Medea, and we are her offspring. We do not want to die, but Mother Earth requires it. Extinction is built into our biology, to ensure that we have eliminated before create the sheer imbalance in the world. Once people become incurable plague on the planet, we will do something that guarantees our own demise.
Ward believes that almost all of the previous mass extinctions were triggered by living organisms. For example, he places the blame for the two periods, ” Earth-snow “, which took place millions of years ago, on plants that have spread so wildly that swallowed an excessive amount of carbon dioxide. This has led to global cooling, and hence to plant death. Similarly, if people are to blame for the current climate change, there is no guarantee that our own species will survive.
In short, our internal clock will stop suicide long before we get the chance to communicate with aliens.
They walk among us
It sounds like science fiction, but many people believe that aliens live and work around us. For example, the former Canadian Defence Minister Paul Hellyer gave an interview in 2014, in which he claimed that the world lives about 80 different kinds of extraterrestrial life. Some of them, including the Scandinavian blondes look almost identical to humans. Another group, «Short Greys», more like the aliens, and for the most part hidden from the people.
Hellyer is not alone in his beliefs. Physicist Paul Davies of Arizona State University, and Dr. Robert Trundle from the University of Northern Kentucky also believe that aliens walk among us. These people have already resolved their Fermi paradox – aliens exist and the people want it or not, they are among us. You may choose any of the ten options explanation.
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