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https://www.unilad.com/technology/space/carl-sagan-astronomer-cryptic-message-first-humans-mars-880280-20240324
#carl_sagan #mars #planets #space #astronomy https://www.unilad.com/technology/space/carl-sagan-astronomer-cryptic-message-first-humans-mars-880280-20240324
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Astronomer leaves cryptic message for the first humans on Mars shortly before his own death
Carl Sagan left a cryptic message for the first humans on Mars before his death in 1996.
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