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Human Memorabilia in Space
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Description
Human Memorabilia in Space
(a) Humans have beamed radio signals into space, hoping that the message
will someday be intercepted by an alien civilization. This is a visual version
of the signal sent in 1974 from the Arecibo radio telescope toward the
globular cluster M13. The Pioneer and Voyager spacecraft, now in
interstellar space, also carry messages from Earth
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