We live in a universe of more than 100 million galaxies, within which are countless stars and very likely billions of planets similar to Earth. Can we really be alone there?

If we believe the official announcements of NASA or also the governments of this earth, so far mankind has no knowledge of extraterrestrial life forms. But annually it comes to dozens of sightings of strange flying objects and even extraterrestrials are to appear regularly on the earth or in their environment.

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