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What messages have we sent to aliens?

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Within the early 19th century, Austrian astronomer Joseph Johann Von Littrow earnestly proposed that people dig trenches configured in huge geometric patterns within the Sahara desert, fill them with kerosene and light-weight them ablaze. The concept was to ship a transparent message to alien civilizations residing elsewhere within the photo voltaic system: We’re right here. 

Von Littrow by no means noticed his concept come to fruition. Nonetheless, lengthy after he proposed his formidable plan, we have not stopped our makes an attempt to contact extraterrestrial life.

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