Our planet Earth is by no means unique. This is an ordinary planet, which differs from other planets of the solar system only in that it has favorable conditions for the emergence of life. As a result, humanity got a luxury house at its disposal. The Earth is not the largest, but also not the smallest planet, it was born several billion years ago and gradually received a breathable atmosphere. Whether it is an accident or not, the emergence of life on earth would be impossible without its Moon satellite, which not only shines for those who get lost at night, but also constantly heats up the earth's core, preventing it from cooling down, keeping it in a red-hot state. If it were not for this, the earth would have cooled down long ago, lost its atmosphere and the life that originated on it would have perished. Many consider this chain of accidents to be too long for it to be realized on its own, but if you remember how many planets there are in the universe, it becomes clear that suitable conditions could arise not only on earth.