Silicon-based lifeforms.
Even if in the core of planet Earth is 150 times more silicon than carbon, our life is based on the carbon molecules. In the seas live Diatoms(1), the organisms, what are forming their core by silicon, and that thing has brought in the mind of biologists, that could somewhere in the universe be the lifeform, what is based on silicone?
Diatoms are carbon-based lifeforms, which are forming their core by silicone. Some of those organisms are moving by using wires, what are coming out through the holes, what is forming to the silicone core.
We know why we have not higher organisms on Earth, what is forming of silicone. The reason is that the temperature on Earth is too low, and the oxygen on the atmosphere makes impossible to forming active organisms, which are based on silicone. But we cannot expect that every single organism in the universe would look like us, and live in the same conditions, where we are living. And maybe deep underground of Earth would be lifeforms, what are strange to us.
The thing, what we have always forgotten is that in some other solar systems might have a different kind of lifeforms, what we are, and we must realize that those lifeforms can live in extreme conditions. Those things are always repeating when we are talking or thinking about the extraterrestrial lifeform. And we ever thought one very big misunderstanding, and that is that those alien lifeforms are born on their home planet. They are living in their world, which might be far away from our planet, and for those aliens, hell for us is a paradise for them.
If we are thinking about the lifeform, what is formed by silicon, for that lifeform the oxygen would be poison, which terminates those aliens right away. If those hypothetical lifeforms would be formed by silicon, they would need extremely high temperatures for operating. And for those aliens, planet Earth could be frozen hell, and the oxygen is the poison for those creatures.
And in this hypothesis, the alien lifeform would look like a human, but in every molecule, in its body would have silicone in the place whereon Earth is the carbon atom. This is a fascinating theoretical lifeform. It would have a similar culture, what we have, but the structure of that creature would be different, and the question is that could that creature make civilization or fly to space?
The answer is very difficult because fire is the base of our civilization. And the high temperature, where is no oxygen making the fire and tools is difficult. But there is a possibility, that this creature would live in a locked planet, and somehow finds out how to make lenses or mirrors for creating the temperature, what would melt metals.
And maybe those aliens would use nuclear or some other way to create propulsion, what rises them to space. But as we know that road is not very easy, and those aliens would not get the model of fire from anywhere. When we are thinking about the locked planet, what dayside would be extremely hot, those silicon-based lifeforms would maybe afraid dark.
The dark side of the planet would be cold, and there is a possibility, that the winds would decrease the temperature of the dayside so low, that silicone cannot react. The winds of that kind of planet would be extremely powerful, and that will make problems for the creation of the silicon-based aliens.
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