posts from @jackapedia tagged #orbposting

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PAGEOS (Passive Geodetic Earth-Orbiting Satellite) was a 100-foot-wide chrome sphere launched into space in 1966, for use as a surveying tool. By referencing its position from stations on the surface, scientists were able to improve our measurements of the positions of the continents by roughly an order of magnitude. The last large fragment of PAGEOS deorbited in 2016.

Wikipedia