How would you communicate with a being with whom you did not share any common knowledge? The Pioneer plaque attempts to do just that. Engraved on panels of the Pioneer 10 and 11 spacecraft launched in 1972 and 1973 respectively, the plaques attempt to describe humans, our solar system and our place in the universe using images and mathematical calculations. Sagan, Drake and Haogland assumed the plaque could be decoded by an intelligent alien civilization that happened across the probes during their infinite journey through the space beyond our solar system after their missions to observe Jupiter and Saturn.
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