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Voyager Golden Record
The Voyager Golden Records are phonograph records that were included aboard both Voyager spacecraft launched in 1977. They contain sounds and images selected to portray the diversity of life and culture on Earth, and are intended for any intelligent extraterrestrial life form, or for future humans, who may find them. Neither Voyager spacecraft is heading toward any particular star, but ''Voyager 1'' will pass within 1.6 light-years of the star Gliese 445, currently in the constellation Camelopardalis, in about 40,000 years.
As the probes are extremely small compared to the vastness of interstellar space, the probability of a space-faring civilization encountering them is very small, especially since the probes will eventually stop emitting electromagnetic radiation meant for communication.
Carl Sagan noted that "The spacecraft will be encountered and the record played only if there are advanced space-faring civilizations in interstellar space. But the launching of this 'bottle' into the cosmic 'ocean' says something very hopeful about life on this planet." Thus the record is best seen as a time capsule.
== Background ==
The ''Voyager 1'' probe is currently the farthest human made object from Earth. Voyager 1 has reached interstellar space, the region between stars where the galactic plasma is present. Like their predecessors Pioneer 10 and 11, which featured a simple plaque, both Voyager 1 and Voyager 2 were launched by NASA with a message aboard — a kind of time capsule, intended to communicate to extraterrestrials a story of the world of humans on Earth.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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