And a Highbrow Harvard paper on VG 1991
and an image
*From Wikipedia
A Bracewell probe is a hypothetical concept for an autonomous interstellar space probe dispatched for the express purpose of communication with one or more alien civilizations. It was proposed by Ronald N. Bracewell in a 1960 paper, as an alternative to interstellar radio communication between widely separated civilizations. (Bracewell, 1960)
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