There are many problems to search for extraterrestrial life forms.

"Artist’s conception of an M dwarf planetary system, where methyl bromide is more likely to be detected. Credit: NASA/JPL/Caltech" (SciTechDaily.com/ A Better Way To Search for Extraterrestrial Life)

If extraterrestrial lifeform is primitive like algae or bacteria researchers must search for the products of those organisms' metabolism. And the biggest problem is that exoplanets that can host life are very far away.

Researchers have no information on what kind of creatures they should search for. Or what those primitive aliens are eating. Without any bacteria, samples are very hard to make any kind of model that those researchers must search for. 

And for those models, the researchers must use terrestrial bacteria as the model. So when we are thinking of those hypothetical bacteria as organisms that lived billions of years on some planet those organisms would be fully adapted to their home planet. 

In some scenarios in the deep oceans of some exoplanets live organisms with the capacity to make oxygen by using electric cells and electrolysis. But even if those extraterrestrial fishes seem like fish they don't have any other connections with fishes on Earth. Except both of those organisms are living in the water. 

There is a possibility that some extraterrestrial aliens have green or red skin. That makes their skin photosynthetic. The green skin means the alien species would have chlorophyll in its skin cells. And red skin means that the alien has the same molecule. That makes purple photosynthetic bacteria photosynthetic. 

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There is the possibility that we already have alien transmissions. But we cannot separate the data from cosmic background noise. 

That is one of the most interesting scenarios of the SETI program. Things like BLC-1 and Wow! signals are interesting. And the problem is that they happened only once. 

But the fact is that use of hydrogen's alpha line frequency is ineffective for data communication. In that frequency, the cosmic background noise disturbs information. And at least high-speed encoded data transmission is very difficult by using the hydrogen line's frequency. 

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But when we are searching for an intelligent alien civilization. We must understand that the search for those aliens is a very difficult mission. Even if aliens use radio transmissions for communication by using synthetic radio frequencies searching for those aliens is extremely difficult. 

And the reason for that is that radio astronomers have no permission to listen to those frequencies. Listening to synthetic radio frequencies is prohibited because of data security. This thing is one of the biggest problems in the SETI program. The synthetic radio frequencies are allowing better change for everyday data transmission than hydrogen's alpha emission line. 

But for some reason, we just expect that hypothetical aliens are keeping contact with each other by using hydrogen lines in communication. That thing causes very bad disturbance for those radio transmissions. Of course, aliens must use the numeric system that we know that we can even separate the alien transmission from the background noise. 

There is the possibility that we have alien messages but we cannot recognize them. So we cannot separate that purpose information from background noise. And the reason for that is we have no key to alien data transmission. But there is no confirmation for that allegation. And that is only a hypothesis. 

https://scitechdaily.com/a-better-way-to-search-for-extraterrestrial-life/

https://astronomyandtechnology.blogspot.com/

Could there be intelligent aliens at the universe?

Could there be intelligent aliens at the universe?

https://kimmonesittely.blogspot.com/p/could-there-be-intelligent-aliens-at.html

Image by David A. Hardy

Could there be intelligent aliens at the universe?


On top of the text is a fictional image, what is painted by David Hardy. This image could be the alien reconnaissance vehicle, but it can portrait the undercover Death Star. In fact, those ion motors what this spacecraft uses could also be used as the ion cannon, and the vehicle could create antimatter cannon, what could destroy the entire planet.

Could there be intelligent aliens at the universe? This is the so-called FAQ question and the answer for that kind of things is, that there could be intelligent civilization, what will make contact with us maybe tomorrow. Maybe after 100 years, or they might already contact us, but the governments have been cover-up that information.

This is one of the things, what are the normal question about the humanoids, and the answer must be mode to the way, that there might be many different types of civilizations, and only some of them would try to contact other civilization. If the civilization what would try to make contact with us would be the super-civilization, that will mean that they would be the dominating side in the discussions.

And if they would want to make bad things to us, we would be destroyed. Here are three types of hypothetical aliens, what might want to contact us, and if we would someday get the message from the other civilizations, we must be very careful, if we would answer to that thing. Because if we will act the wrong way in that discussion, that would be the end of our species and the entire planet.

1. The civilizations what are active, and try to contact other civilizations by using active methods

Those civilizations might be very advanced, and the thing is that they would have weapons, what might destroy the entire planet. This kind of things is making them so brave, that they have systems, what they use for defending themselves.

But those civilizations can also be very dangerous in one other way. They would be aliens, what are taking slaves, and put the taken planet habitats to serve themselves. And the thing is that those aliens might be very militaristic because they dare to contact other civilizations because they would need the ability to defend themselves in conflict situations. The thing what makes those civilizations very dangerous is that they might discuss only with the species, what are in their level, and other planets they will conquer.

2. The passive civilizations

This kind of civilizations might be some kind of refugees. Or they would come from the planet, what seems like Earth. That means the hypothetical humanoids would also serve in the secret military bases, and in fact, those civilizations could hide the interstellar technology from the normal citizens. If those aliens would be some kind of refugees, they might also be dangerous.

In the case that they would be some kind of bandits, they might destroy the planet, which observes them because of their own protection. But those aliens would be very addictive to contact because they could deliver their technology to humans.

3. The civilizations, what cannot get anything from us or our planet

In theory, there could be the aliens, what are using the liquid helium or ammonia as the place of the water. That would mean that those aliens live in the extreme cold planets, and they would burn on Earth. That thing would protect us from the colonization of those aliens.

The aliens, what have helium-based metabolism would need the temperature, what is near the zero kelvin, and that means that on our planet those creatures would be harmless. They could not operate freely on our planet's surface. But the thing is that they could be extremely intelligent because their neurons would operate in the superconducting environment.

The hypothetical aliens would not be copies of human

The thing is that those aliens would be extremely dangerous, and they could destroy us if they think that we would be treats to that civilization. They could live an extremely long time and those civilizations will advance to super civilization. But those examples are only taken from my head, and officially there is no evidence about the other civilizations. what really amazes me.

The thing is that there could be many habitable planets, and there would live species, what are born for the conditions of their own planets. And that means that intelligent aliens might be very different than we are. When we are telling the things, that some planet is uncomfortable for us, we might think that the same way Earth would be an uncomfortable place for the habitats, what life on that planet.