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Once the physicist Enrico Fermi wondered: where is everything? Or if more precisely, “where are all the aliens?” So the Fermi paradox arose. When we estimate the size of the universe, the number of earth-like planets, and a series of other variables (indicated in the Drake equation) becomes it is clear that in one galaxy there must be tens of thousands or more extraterrestrial civilizations.
And since the galaxy is about 10 billion years old, the worlds had enough time to communicate with each other. So if aliens statistically exist, then where are they? Why are we can’t find them?
Earth is special
The unique Earth hypothesis suggests that a chain of events, which created life on our planet was so complex that only a biologically perfect vortex could create it yet anywhere.
Although perhaps there are Earth-like planets, none of they may not contain exactly the necessary conditions for life development. In other words, we have not met any aliens, because they simply do not exist, or there are so few of them and they are so far away that contact is extremely unlikely.
The main factor that makes the Earth hospitable to life, is its long period of relatively stable climatic conditions due to the unique orbit and position of the planet. If not for our exact position relative to the Sun or Moon, on the planet would be too hot or cold, not enough oxygen and too unstable conditions to support life outside bacteria.
Paleontologist Peter Ward and astronomer Donald Brownlee were the first to who presented the hypothesis of a unique Earth. And although 15 years have passed since the birth of the hypothesis, and we found a lot of earth-like planets, scientists are still convinced that the chances of life on these worlds extremely low.
Every intelligent life has a stumbling block
According to the theory of the Great Filter, alien life really exists but intelligent life is not able advance technologically far enough to invent long-range space communications or space travels.
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Although our modern spaceships, satellites and radio they say that we are close to the point of no return, perhaps us inevitably expects a barrier or disaster that will either destroy us, or lead to the degradation of technology.
We know that catastrophic natural disasters periodically visit the Earth, so it’s quite possible that these same events destroy worlds everywhere, sending intelligent life back to stone age before technology can adequately evolve. Or perhaps we will destroy ourselves in a nuclear war. Whatever there was this filter, only bad news awaits us. We are not only not We will be able to contact other astronauts, but we will probably die.
There is also a bright side to this theory. Some people think that we are the first to go through this filter, so most likely become the dominant race in space. And this is good.
They left the universe
According to the futuristic hypothesis of John Smart superiority, intelligent extraterrestrial life once existed in our universe, but became so perfect that she moved to better places. If to be more precise, aliens evolved so much that they stopped look at outer space, but focused on the inner.
The concept can be compared to the miniaturization that we observe in computers. Originally they were conceived as huge technologies that fill entire rooms but then become smaller (up to pocket ones), at the same time developing complexity and power. For proponents of the theory of superiority intelligent life evolving in much the same way, constantly working on more dense and efficient use of space, time, energy and matter.
In the end, we will live and work on a nanoscale until become so small that we create and settle in a black hole outside of this space-time continuum.
According to Smart and others, black holes are the final destination destination. They allow perfect computing and training, temporary travel, energy production and more. Civilizations that are not achieve this, doomed.
Other cosmic creatures can also work on their own superiority, or transcendence. Also following the law Mura, these creatures are more likely to achieve superiority before conquer the cosmos.
Earth is not as big 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 populated worlds, and sentient beings are more likely to be Spend your time researching them, not Earth. This theory completely opposite the theory of a unique Earth: in our planet nothing special at all.
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Extraterrestrial civilization, able to move or communicate on light years, will hardly worry about our existence – we because we don’t talk with flies. In addition, she will definitely have her Chic technology, so they do not need our miserable resources. If they will need minerals or other elements, they are full in space and without earth.
Also, no matter how intelligent the creatures are, traveling on light years is not an easy feat. What are the odds that they will spend their energy visiting us when are there 8.8 billion Earth-like planets in the entire Milky Way? Followers of this theory argue that thinking that the Earth is tidbit, it is to suffer the same geocentrism that led to the erroneous pursuit of Galileo.
We live in virtual reality
Perhaps one of the most difficult to understand explanations. the Fermi paradox is a planetarium hypothesis. Our world represents a form of a “planetarium in virtual reality created with aim to give us the illusion that the universe is empty. “We did not find no extraterrestrial civilizations because these extraterrestrial civilizations did not include it in the program.
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The foundations of this theory are rooted in the ideas of Descartes, who I wondered: “How can we know that the world around us is real, if we are just a brain in a vat that thinks it lives in real the world? ”
Instead of putting brains in a vat, modern proponents of these ideas, we think that we live in a computer simulation created by advanced aliens. These aliens use enough energies to manipulate matter and energy on galactic scale. Why do they want to watch us like ants? Maybe just for fun, or maybe just to make sure they can.
You will be surprised, but philosophers and physicists take very seriously this idea. They say we are more likely to be artificial intelligence in a fabricated world than possessing their own mind. In addition, we are likely to find a simulation, since accurately notice a failure in the system or develop an adequate experiment to confirm this theory.
We live in the outer space
Although intelligent alien life may exist, our planets may be too far apart for communication were justified or possible. Earth may be so far from others inhabited worlds that we may not be able to see.
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If that’s not enough to feel alone, some argue that most other worlds are relatively close together and interact while we are overboard this pangalactic party.
The roots of this idea go back to the mathematical theory known as percolation that describes how things are pulled together by chance environment. If we take the theory of percolation as a basis, the Universe naturally formed 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 creatures, some like Stephen Hawking think we need to hide. Hawking says that if we get an extraterrestrial signal, we need to be extremely careful not responding until we develop. Otherwise, we can repeat the fate of Native Americans. after the arrival of Columbus.
We have not yet found their signals
Scientists like Frank Drake and Carl Sagan argue that “lack of evidence is not evidence of absence aliens. “The hunt for extraterrestrial life is significantly limited lack of government funding that is needed so that scientists can afford an extensive arsenal of tools and alien tracking resources.
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Historically, the extraterrestrial intelligence search program (SETI) relies only on rented radio telescopes and more equipment that can be used for a limited time time. These obstacles have made real progress in practice. impossible.
There is good news for those who think that contact with extraterrestrial life is a good idea. Radio telescope Allen Telescope Array, designed specifically for the search for extraterrestrial life, began work in 2007.
This giant telescope, consisting of 42 individual 6-meter telescopes, was largely built thanks to the co-founder Microsoft to Paul Allen. After many failures, he finally started do your important work. If something tries to contact Earth, he finds out about it.
We cannot recognize their signals
Even if other planets are hospitable to life, can creatures evolve there similarly to life on Earth? Maybe they so different from us that we cannot distinguish between them signals?
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This is quite possible, if you remember, for example, bats, which can visualize sound waves, although we only see shine. Perhaps aliens and we are equipped with fundamentally different a set of feelings.
As cosmologist and astrophysicist Lord Martin Rees noted, “they can look into our faces, but we just don’t recognize them. Problem in that we are looking for something that is very similar to us, has a similar math and technology. I suspect life and mind may exist in such forms that we cannot even imagine”.
Things get even harder if you try to contact highly developed race that uses other methods of communication (neutrinos, for example, or gravitational waves), inaccessible to our understanding of technology. Similarly, our primitive radio can to be nothing more than white noise for them. If aliens and people unlikely, it is unlikely that we will be able to contact them and resolve Fermi paradox – provided that we continue anthropomorphization of aliens and wait for them to contact us.
Superorganisms are suicidal in nature
Medea’s hypothesis, invented by paleontologist Peter Ward, states that humans and other superorganisms carry seeds within themselves self destruction. In some ways, it fits well with theory Great filter, since it assumes that we die before can connect with extraterrestrial civilization.
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The hypothesis is named after Medea from Greek mythology, which killed her children. In our case, the planet is Medea, and we her progeny. We do not want to die, but Mother Earth requires it. Extinction is embedded in our biology to ensure that we we will be eliminated before we create a complete imbalance on Earth. After of how people will become an incurable plague on the planet, we will do something that guarantees our own demise.
Ward believes that almost all previous mass extinctions have been provoked by living organisms. For example, he blames two periods of “Earth-snowball”, which took place millions of years ago, to plants that have spread so wildly that they have absorbed excessive amounts of carbon dioxide.
This led to global cooling, and therefore to death of plants. Similarly, if people are guilty of the present climate change, there is no guarantee that our own view able to survive.
In short, our internal suicidal clock will stop long before we get a chance to chat with aliens.
They walk among us
Sounds like science fiction, but many people are sure that aliens live and work around us. For example, a former minister Canadian Defense Paul Hellier was interviewed in 2014 in which claimed that about 80 different species live on Earth alien life.
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Some of them, including Scandinavian blondes, look almost identical to humans. Another group, “Short Greys”, is more like to aliens and for the most part is hiding from people.
Hellier is not alone in his beliefs. Physicist Paul Davis from Arizona State University and Dr. Robert Thrandl of Northern Kentucky University also believes that aliens walk among us.
Such people have already resolved their Fermi paradox – aliens exist and whether people want or not, they are among us. You have the right choose any of ten explanations.
Time Universe Galaxy Life Plants Stephen Hawking Black Hole
