Wikipedia:POTD column/December 4, 2006

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The Pioneer plaque, which was included on both Pioneer 10 and Pioneer 11 unmanned spacecraft, the first man-made objects to leave our solar system. Made from gold-anodised aluminium, the plaque shows the figures of a man and a woman along with several symbols that are designed to provide information about the origin of the spacecraft. However, the mean time for the spacecraft to come within 30 astronomical units of a star is longer than the current age of our galaxy.

Plaque credit: Carl Sagan, Frank Drake, Linda Salzman Sagan
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• This page was last modified 17:24, 3 November 2006 by Wikipedia user Howcheng.
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