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Q&A Alien message: "Invitation"

A message arrives from several light years away. It is a complete prepared document, not a two-way communication. The document can contain line-drawings and diagrams, both 2D and 3D, plus movies ...

7 answers  ·  posted 8y ago by JDługosz‭  ·  last activity 8y ago by JDługosz‭

Question aliens communication