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CSETI (The Center for the Study of Extraterrestrial Intelligence) has in the past 18 months succeeded in intentionally establishing contact with extraterrestrial spacecraft, on two occasions at very close range, and with multiple witnesses present.

Steven M. Greer (1999). “Extraterrestrial Contact: The Evidence and Implications”, Crossing Point Incorporated
CSETI (The Center for the Study of Extraterrestrial Intelligence) has in the past 18 months succeeded in intentionally establishing contact with extraterrestrial spacecraft, on two occasions at very close range, and