Abstract
In the search for habitable planets, the ultimate aspiration is finding an extraterrestrial technical civilization. We already lost a half of century for an active search for extraterrestrial civilizations. Should we lose another half? If all civilizations in the Universe are only recipients and not message-sending civilizations, then no SETI (Search for Extraterrestrial Intelligence) searches make any sense. Detecting only leaked radio signals is a hard job with present resources. Fear from the extraterrestrials is unfounded, having in mind physical difficulties and requirements of the interstellar travel. If possible extraterrestrial civilizations are more advanced than ours then they can pick up life signs from Earth easier than we can from their planets at present. Here we propose a scientifically based METI (Messaging to Extraterrestrial Intelligence) program.
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Acknowledgements
This research has been supported by the Ministry of Education and Science of the Republic of Serbia through the project: 176021 ‘Visible and Invisible Matter in Nearby Galaxies: Theory and observations’.
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Lukic, D.V. Active SETI in Solar system neighborhood. Astrophys Space Sci 363, 159 (2018). https://doi.org/10.1007/s10509-018-3384-0
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DOI: https://doi.org/10.1007/s10509-018-3384-0