Magic wand or self-replicating research probes of Civilizations High-level development While there are no clear signs of extraterrestrial life, astronomers are not yet seeing the Earth, a short series of arithmetic gently leads to the idea that this is a temporary phenomenon.
The focal area of neighboring systems like Alpha Centauri same may well be the source of the signal that has been looking so SETI. Unless, of course, alien space probes used for communication radio waves or lasers. (Illustration David A Hardy / UKATC.)
Twenty years ago we did not even know if there is a planet outside the solar system, and the current data indicate that only in our galaxy are hundreds of billions, and, obviously, billions of them - this is a relatively low-mass exoplanets in the habitable zone. Given the fact that the galaxies in the universe is clearly more than a billion, it is very difficult to come up with a theory that could convincingly explain why life began on Earth, and only did not appear on the other septillionah such bodies.
Yes, as long as astronomical instruments earthlings are so worthless that we have only recently analyzed the chemical composition of the atmospheres of other planets (and one can not say that the results of this analysis put everything in its place). But traces of extraterrestrial life can look different: not where it originated, and closer to it, in theory, should eventually come to herself.
Mankind has already sent out of the solar system is not a spacecraft, and a more advanced civilization, it is likely able to deploy more durable probes with decent on-board power source and the ability to reproduce through the asteroid material studied kosmorobotami such systems. Can they somehow missed it?
Michel Guillon (Michael Gillon) of the University of Liège (Belgium) is confident that one of the forms of activity such probes of other civilizations completely detectable. Here we recall that other researchers have suggested that using the gravitational lensing of black holes (BH), you can exchange signals over large distances without excessive power of the signal. However, the gravity of ordinary stars, although not as powerful as that of the black hole, also generates gravitational lensing.
Imagine that in the vicinity of the star systems in our bodies revolve around there the hypothetical extraterrestrial probes. They need a way to communicate with those who sent them, or at least with other such probes - to avoid duplication in research.
The sun or another star - is an antenna that is much more powerful than any ever built, - says Mr. Guyon. And to use it to transfer data to another planetary system, the probe will have to be in a plane passing through the nearest to him a star - and a focal plane, in principle, can be observed from a nearby star.
No, of course, a way to detect the probe itself - given that its dimensions are unknown and may be very modest - will not work. However, increasing the transmit signal lights adjacent gravitational lensing, the probe is bound to create a leak for the coherent radiation is hardly possible for the radio and for laser communications.
Of course, this is not a magic wand. We do not know the frequency and range used, that is, observing the focal areas of neighboring systems should be long and multidiapazonnymi (and always will be productive). However, today, this method seems to be the most practical way to identify the von Neumann machines, as they are called, such hypothetical self-replicating research probes, which are expected to start to run any civilization which has left the high level of development.
Try it, definitely worth it, for though the weakness of current telescopes can see traces of VC from distant stars, and they can take a closer look.
in the wake of Acta Astronautica, Universe Today, compulenta.computerra.ru
