We have cosmos. many cosmonauts ana astronauts and scientists have already been there and know a lot about it. there are some facts that there is aliens in the cosmos. also we know that cosmos is not empty because there are cosmic rays, electromagnetic radiation, dark matter and interstellr space. there are no border in the cosmos, the atmosphere is gradually diluted as it moves away from the earth's surface and still no consensus that toconsider the factor of the beginning of the cosmos.
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