The image above portrays the Artist's impression of an interstellar communication laser. That system could use also X-and gamma-ray frequencies. But modern technology is not advanced enough to communicate by using those high-energy frequencies. So use of X- or gamma-rays in communication belongs to the distant future.
Researchers are telling that X-rays can carry information between stars. So the hypothetical super civilization can use X-ray lasers for interstellar data transmission. The remarkable thing is that also gamma- and all other wave motion can act as data transporter.
Because X- and gamma-rays have so high energy loads. Another wave motion will not disturb the message that is sent by using X- or gamma rays. That helps to keep information sterile. In the article below this text mentions only the X-rays. Same way gamma- and even gravitational waves can use as messaging between long distances.
The space is full of wave motion. And most of that is invisible to the human eye. Also, things like gravitational waves could theoretically transmit data. The problem is how to control those waves. Before nobody can send the message by using gravitational waves there must be more information about that radiation.
The most interesting thing is how to make gravitational waves that are strong and accurate enough for data transportation. There is a possibility that someday people can make the gravitational laser. Or laser that sends the gravitational waves. The system can be two very heavy elementary particles that are rotating each other. The system could use quantum-size black holes for that thing.
Then the laser would transmit data to that quantum system which turns its form into gravitational waves. Enhancing the power of those gravitational waves could be simple. Other gravitational systems can pump energy to that gravitational wave. The idea is that the system uses coherent gravitational waves.
And because nobody knows can gravitational waves reflect the system must use a similar methodology with maser. The gravitational waves will just drive through the other gravitational fields. That will increase the power of the gravitational waves.
Anyway, gravitational waves are an interesting and little-known thing. They have shown that gravitation is a wave motion. The wave motion always acts similar way. So the gravitational waves should have scattering and reflection similar way to other wave motions.
The scattering or reflection of the gravitational waves can be the key to real antigravitation. The idea is that above the object will form the gravitational wave that pulls the object up. Or scattering of gravitational waves can create a weaker gravitational field around some objects. So that thing makes it possible to create the thing called real antigravitation.
https://spectrum.ieee.org/search-for-extraterrestrial-intelligence
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