Why exactly on this planet? Because on Earth there are suitable conditions for this:
The Earth is not too close to the Sun, like Mercury or Venus, but not too far away, like Mars. The result: a climate suitable for the development of life, the water does not evaporate or freeze. The Earth has an iron core, which allows the planet to have a magnetic field. Result: the planet's surface is less exposed to solar radiation and harsh cosmic radiation. The Earth belongs to cosmic bodies with a hard stone shell, there were enough elements on the planet such as oxygen and carbon, which, together with hydrogen, form the basis of life. There is very little carbon on icy planets. Result: enough "building material" for biological systems.
The solar system has Jupiter, which with its powerful gravitational field captures most comets and meteorites, which would otherwise bombard our planet hundreds of times more often. Result: life was able to develop, and not die over and over again at the initial stages.
These conditions are a rather rare combination of fortunate coincidences. But it would be a great exaggeration to think that the Earth is unique. Today, astronomers already know about 20 exoplanets with conditions similar to those on Earth. Hypothetically, life could well have developed on them. And this is only in our galaxy.
Will humanity be able to populate other planets? Or will those planets already have their own life when we arrive there? Or maybe we are doomed to eternal "house arrest" on our own planet? Time will tell.
What do you think about it?
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