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== Launch, trajectory, and orbit ==
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The WMAP satellite arrived at the Kennedy Space Center on 20 April 2001, was tested for two months, mounted atop a Delta II 7425 rocket, and fired to outer space on 30 June 2001.<ref name="2008Limon" /><ref name="news_facts" /> It began operating on its internal power five minutes before its launching, and so continued operating until the solar panel array deployed. The WMAP was activated and monitored while it cooled. On 2 July, it began working, first with in-flight testing (from launching 'til 17 August), then began constant, formal work.<ref name="2008Limon" /> Afterwards, it effected three Earth-Moon phase loops, measuring its [[sidelobe]]s, then flew by the Moon on 30 July, enroute to the the L2 Sun-Earth [[Lagrangian point]], arriving there on 1 October 2001, becoming, thereby, the first CMB observation mission permanently posted there.<ref name="news_facts" />
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