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What signal fumes are aliens?
1.
steal here: science.compulenta.ru/671941/
Astronomer Geoffrey Marcy, one of the leading experts on exoplanets now plans to seek more complex objects - alien civilizations. According to him, he knows why this activity has not yet been successful.
The good news is that, in his opinion, ETC (CC) do not need to somehow urge to chat with us for many years to wait for our signals reach them (and vice versa). The fact is that if more than one civilizations, they would inevitably have to have contact with each other, with an active, searching for ETI has long been considered axiomatic that if ETI exist at all, a lot of them. Current research in the field of exoplanets it seems to be confirmed that even the closest to the Earth Alpha Centauri may be a planet in the habitable zone, and at least one third of solar systems in the galactic habitable zone are Earth-like planets. In terms of numbers it is tens of billions.
The bad news, however, is that all taken within the SETI efforts (as well as all efforts to find the aliens in general) have been in vain. In fact, we tried to contact the VC using the smoke alarm and the native drums, while those long used a much more effective means of communication, which until recently we did not know. "They will not extend the fiber optic cable between the stars, they will communicate with lasers" - believes Mr. Marcy.
2.
Why is that? The radio emission is incoherent, requires huge antennas and receivers, it is influenced by the interference of natural interstellar background. Using the analogy, we can say that the signal fire, visible up to 1 000 km, will be very large and difficult to organize, and the clouds in the "Receiver" may reduce its effectiveness as an information carrier to zero. The effectiveness of radio at the same distance will be higher, and the amount spent for the connection of energy - less. At the inter-civilization dialogue should be used as much as possible coherent emitters can "get to the space ship of another civilization from another star," says Geoff Marcy. Which is good, because it means that thousands or millions of laser beams (or rather, their reflections) must continuously circulate throughout the galaxy, as when receiving the laser beam must be the last part reflected from the receivers.
Moreover, he said the astronomer, EC may well have to target their lasers in our direction, and we did not notice the light spots on them just because they do not reflect on the need to maintain appropriate supervision. A similar situation would arise, covet Marconi Popov or talk with the natives in the Amazon jungle with the help of radio.
According to scientists, the discovery of Earth by aliens - almost inevitable. "In the next century or so, we, the people, will have telescopes with reflective mirrors scattered from Earth to Jupiter and simulates the work of a single optical telescope with an enormous angular resolution," - notes Mr. Marcy. In fact, such systems are already in use - such, for example, telescopes as VLT. All that's left to do - deliver a reflecting mirror to the orbit of Jupiter. The presence of these telescopes is that "we have one [in the future] to see the continent to the other [exo] planets." Obviously, the advanced VTS already have such an opportunity. After all, it is now clear, the stars with high metallicity (ie with lots of Earth-like planets) already existed 10 billion years ago, and therefore the time for the development of our "competitors" were very many.
SETI project was conducted for decades. But whether it was laid out from the beginning? Where did come from the belief that "alieny" use the radio? (Photo by Dave Fayram.)
3.
Furthermore. Ground-based telescopes earthlings is used in adaptive optics own lasers. With their help, atmospheric aberration is corrected. Of course, "we have already sent our existence issuing signals" to a variety of objects from star catalogs. Of course, it is only the messenger, even at a distance of 1000 light-years of our lasers detect traces only after many centuries. But when this happens, the VC of the area immediately using their telescopic system for careful study of the Earth. If they want to talk, then send highly coherent laser pulses, said Geoffrey Marcy, so we need to urgently organize the tracking of such signals.
In order not to be the last, who are aware of the Earth's mass detection by other VTs, says astronomer, you need to have a space-based telescopes, much larger than the Kepler: something like a rejected for financial reasons Terrestrial Planet Finder and Darwin.
Note that the communication model is the active VC that astronomers suggest, based on the assumption that the model of alien societies close to the west of the current, that is meant active peace-and-friendship with other civilizations. However, the earth's history shows other types of communication with outside civilizations, such as the approach of the Mongol Empire during its heyday and the Japanese model of "the country of the castle." It is likely the existence of ETI other approaches, equidistant from these three.
Even our spacecraft are increasingly used for laser ranging, and so on. It may be that in this case we inadvertently give out itself to other civilizations. (Photo: Wikipedia.)
Source:
steal here: science.compulenta.ru/671941/
Astronomer Geoffrey Marcy, one of the leading experts on exoplanets now plans to seek more complex objects - alien civilizations. According to him, he knows why this activity has not yet been successful.
The good news is that, in his opinion, ETC (CC) do not need to somehow urge to chat with us for many years to wait for our signals reach them (and vice versa). The fact is that if more than one civilizations, they would inevitably have to have contact with each other, with an active, searching for ETI has long been considered axiomatic that if ETI exist at all, a lot of them. Current research in the field of exoplanets it seems to be confirmed that even the closest to the Earth Alpha Centauri may be a planet in the habitable zone, and at least one third of solar systems in the galactic habitable zone are Earth-like planets. In terms of numbers it is tens of billions.
The bad news, however, is that all taken within the SETI efforts (as well as all efforts to find the aliens in general) have been in vain. In fact, we tried to contact the VC using the smoke alarm and the native drums, while those long used a much more effective means of communication, which until recently we did not know. "They will not extend the fiber optic cable between the stars, they will communicate with lasers" - believes Mr. Marcy.
2.
Why is that? The radio emission is incoherent, requires huge antennas and receivers, it is influenced by the interference of natural interstellar background. Using the analogy, we can say that the signal fire, visible up to 1 000 km, will be very large and difficult to organize, and the clouds in the "Receiver" may reduce its effectiveness as an information carrier to zero. The effectiveness of radio at the same distance will be higher, and the amount spent for the connection of energy - less. At the inter-civilization dialogue should be used as much as possible coherent emitters can "get to the space ship of another civilization from another star," says Geoff Marcy. Which is good, because it means that thousands or millions of laser beams (or rather, their reflections) must continuously circulate throughout the galaxy, as when receiving the laser beam must be the last part reflected from the receivers.
Moreover, he said the astronomer, EC may well have to target their lasers in our direction, and we did not notice the light spots on them just because they do not reflect on the need to maintain appropriate supervision. A similar situation would arise, covet Marconi Popov or talk with the natives in the Amazon jungle with the help of radio.
According to scientists, the discovery of Earth by aliens - almost inevitable. "In the next century or so, we, the people, will have telescopes with reflective mirrors scattered from Earth to Jupiter and simulates the work of a single optical telescope with an enormous angular resolution," - notes Mr. Marcy. In fact, such systems are already in use - such, for example, telescopes as VLT. All that's left to do - deliver a reflecting mirror to the orbit of Jupiter. The presence of these telescopes is that "we have one [in the future] to see the continent to the other [exo] planets." Obviously, the advanced VTS already have such an opportunity. After all, it is now clear, the stars with high metallicity (ie with lots of Earth-like planets) already existed 10 billion years ago, and therefore the time for the development of our "competitors" were very many.
SETI project was conducted for decades. But whether it was laid out from the beginning? Where did come from the belief that "alieny" use the radio? (Photo by Dave Fayram.)
3.
Furthermore. Ground-based telescopes earthlings is used in adaptive optics own lasers. With their help, atmospheric aberration is corrected. Of course, "we have already sent our existence issuing signals" to a variety of objects from star catalogs. Of course, it is only the messenger, even at a distance of 1000 light-years of our lasers detect traces only after many centuries. But when this happens, the VC of the area immediately using their telescopic system for careful study of the Earth. If they want to talk, then send highly coherent laser pulses, said Geoffrey Marcy, so we need to urgently organize the tracking of such signals.
In order not to be the last, who are aware of the Earth's mass detection by other VTs, says astronomer, you need to have a space-based telescopes, much larger than the Kepler: something like a rejected for financial reasons Terrestrial Planet Finder and Darwin.
Note that the communication model is the active VC that astronomers suggest, based on the assumption that the model of alien societies close to the west of the current, that is meant active peace-and-friendship with other civilizations. However, the earth's history shows other types of communication with outside civilizations, such as the approach of the Mongol Empire during its heyday and the Japanese model of "the country of the castle." It is likely the existence of ETI other approaches, equidistant from these three.
Even our spacecraft are increasingly used for laser ranging, and so on. It may be that in this case we inadvertently give out itself to other civilizations. (Photo: Wikipedia.)
Source:
