* Astronomy

Oldest GPS satellite being prepared for disposal
SVN-15, the oldest operational satellite in the GPS constellation has broadcast its signal for more than 16 years, during which time that signal's mission applications -- and the people who make sure the signal is available -- have changed dramatically.
When Satellite Vehicle Number 15 launched Oct. 1, 1990, from Cape Canaveral Air Force Station, Florida, the 2nd Space Operations Squadron's mission was markedly different from what it is today, the 2nd SOPS commander noted.

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