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It is now possible to search the destroyed civilization in space PDF Print E-mail
Friday, 14 August 2015 17:01
Traces of alien civilizations destroyed themselves in a nuclear war, pollution of the atmosphere and nanorobots or uprising, should be visible in the atmosphere of planets for an observer on Earth, say scientists in the article published in the electronic library at Cornell University. More than half a century ago, the American astronomer Frank Drake developed a formula to calculate the number of civilizations in the galaxy, which may come in contact, trying to assess the chances of finding extraterrestrial intelligence and life. The physicist Enrico Fermi in response to a sufficiently high score chance interplanetary contact formula Drake formulated the thesis, which is now known as the Fermi paradox: If extraterrestrial civilizations so much, why mankind has been no trace of them? This paradox, scientists have tried to solve a variety of ways, the most popular of which is the hypothesis of "Rare Earth", which says that the origin of life and the emergence of intelligent beings need a unique environment, essentially repeating the vicissitudes of the evolution of our planet. The confluence of millions of circumstances is unlikely because of what we do not see aliens, according to its author Peter Ward. Duncan Forgan (Duncan Forgan) from the University of St Andrews (Scotland) and his colleagues offer an alternative explanation for the Fermi paradox - that if our "brothers on reason" had to destroy ourselves before we tried to establish contact with them? In this case, we should not look for radio signals emanating from these "dead" civilizations, and the traces of their stay on the surface of the planet, where they existed. The authors tried to assess the likelihood, if we could find and see these worlds, having considered the effects of various man-made disasters on the example of the Earth and appreciating their "visibility" for hypothetical extraterrestrials and how long they will be visible to them. Forgan and his colleagues looked at four scenarios - the complete destruction of civilization through nuclear war, "escape" or combat use of a virus or a microbe-killing aliens and all living creatures, ecological disaster on the planet or star, and the revolt of nanorobots, who have eaten their creators and the entire planet in whole. As shown by their calculations, some traces of these disasters - the "nuclear ashes" in the atmosphere, the ionization of gas in it and their green and blue light, increasing the concentration of hydrocarbons in the air after the destruction of all life "combat" virus traces of Freon and other air pollutants - are clearly visible to telescopes like "Kepler", "James Webb" and TESS. By the way, if you like the fantastic films about distant galaxies, visit the dedicated resource where you can see the new part of the legendary science fiction star Wars: The Awakening forces and many other interesting films. Especially interesting is the scenario of "Rise of the Machines" - if nanorobots will eat all people and animals, the surface of the planet of aliens covered "sand" of them will be a special way to reflect light, dramatically increasing the brightness of the planet at the moment when it will be held on disco lights . A similar effect is observed in all ranges of radiation, and is easily seen using infrared telescopes. Other things, such as the outbreak of a nuclear apocalypse, brimstone "footprint" of decomposition of biomass after completion of a viral or bacterial attack or contamination of subsurface stars discharged radioactive waste it will be too dim or transient in order that they can be directly seen on Earth to understand what they were called. All this gives us hope that these traces of the existence and destruction of civilizations can be found in the future, the project SETI, the initiative Yuri Milner and Stephen Hawking and others.

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