When will find extraterrestrial intelligence? The answer is that nobody knows. Researchers have some promising signals that are captured by radio telescopes. But the problem is that those signals are not repeating. And that means we are alone at least officially. The problem with the SETI program is the common name for Search For Extraterrestrial Intelligence.
The major problem is that those researchers do not even know what they should be looking for when they are looking for an extraterrestrial intelligent alien. The alien is not probably similar to us even its metabolism is similar. There is made many models of aliens.
But models are just models. They are not researched and confirmed information. Those models are made for the cases that sometimes humans are making colonies on other planets. And in those models can benefit in SETI-program. If the hypothetical alien would arrive at another solar system it should act a similar way to the human.
And that theoretical or "model" alien faces the same risks with humans that are traveling to other planets and solar systems. So those hypothetical aliens would also use as the tool. To make the memory lists about things that the space travelers of the future must remember. In the missions, they are traveling in space. And land to other planets.
When we are thinking of the aliens from the point of view of the hypothetical alien race. We might have one very interesting vision of the aliens. If those hypothetical aliens are making interstellar trips, they should use advanced computers and biotechnology along with advanced spacecraft that can fix themselves. Those things are necessary for long-term space missions. Of course, those aliens would not risk themselves in the missions.
The "dummy body" hypothesis
The "dummy body" hypothesis: The brains of the alien are different place than the body. The alien can control the robot's bodies by using BCI (Brain-Computer Interface) or they can have the natural ability to take the targeted creature under control.
There is the possibility that the alien is much more different than we ever imagined. One suggestion for the physical shape of the alien is that the alien is the "thinking fungus". In that model of the alien, the brains of the organism are in a different place than the body.
The hypha of that neuron-fungus would have extremely high electric voltage. And it can take the creature under control by stimulating the nervous system of the target. If that creature exists it can be very flexible. In that case, the alien fungus would control metallic and biological robots and they can be used to capture promising organisms from the targeted planet. Then that fungus will be put in those bodies. But that thing is a pure hypothesis.
That body acts like a robot. The hypha of the neuron-fungus is controlling the other organism what is like an ant. That fungus would interact with computers and control things like spacecraft. Those kinds of ideas are fundamental and they are introduced in some SciFi novels. But then we should ask how we know that those creatures do not exist?
By using modern genetic technology is possible to make photosynthetic skin by transferring genomes that are making the vegetables capable of photosynthesis to skin cells of the animal.
Even today researchers can create the skin that is capable of photosynthesis. Genetic engineering and genome technology allow transferring genomes even between vegetables and animals.
The key question is always: what is the benefit of that thing? Why evolution made something? Or why the genetic engineers have created some attributes? So what would astronauts make with skin that can have the ability to photosynthesis?
What denies that the aliens would not have green skin that will contain chlorophyll? Why alien species cannot have photosynthetic capacity? If the aliens would have advanced biotechnology. They might connect chlorophyll or some other photosynthetic molecules in their skin cells.
Because that gives them more capable to operate in low oxygen conditions. Of course, the purple molecule can also allow photosynthesis. And that means the alien would be red if it uses the same molecule as the first organisms on Earth for creating oxygen in their body.
If we someday land on another planet like Jupiter's Europa moon, we would be aliens in that place.
If we would someday land on another planet we would be aliens on that planet. So if we would land on Jupiter's Europa-moon, that thing can cause that the amoebas or bacteria that live in the oceans of that moon are attacking those astronauts. Same way microbes attack aliens if they land on Earth.
If we are thinking of the intelligent highly advanced alien civilization which travels around the galaxy establishing colonies. We must realize that those aliens might not come to planets like Earth themselves.
Earth-type living planets are full of microbes that can infect those aliens very effectively. The cells of the immune system protect us against those microbes. We are living with those microbes all our life. Our immune system can fight against those creatures.
But the aliens are coming from another environment. They would face hostile microbes which they haven't face yet.
Those alien creatures would not have a natural immune defense against those microbes. And that causes extremely dangerous infections.
So if we would travel to a planet or moon where are some bacteria or amoeba the situation is similar with aliens. In that case, we are aliens that are landing on the planet. And we are facing a similar situation with aliens who are landing on the Earth and face microbes that they are not facing before.
And if the aliens would come on earth they will get epidemic in their spacecraft. So those aliens should operate by using external bodies or remote-control robots. That means the remote-control robots are making all work on the planets.
The reason for that is that the infection is a very big risk in the space colonies. Planets with no atmosphere are more promising places for the bases than planets that have an atmosphere. The cosmic radiation sterilizes the surface of the planet, and that destroys all known organisms.
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