Our solar system may contain alien comets that were stolen from another star flying past 4.5 billion years ago. Far away in a distant cluster of young stars, a similar close encounter might have also sent the inter-stellar visitor “Oumuamua” flying on its way toward us, and there must be many more of these free-floating objects in the galaxy. These are results of a new study by astrophysicists at the University of Zurich.

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Source: archeo