planck spacecraft
普朗克太空飞船
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Planck will be the third spacecraft to investigate the CMB, after Nasa's COBE and WMAP satellites.
BBC: Telescopes ready for rocket ride
The Planck telescope is aboard a spacecraft that launched in May 2009.
CNN: Better 'baby picture' of universe emerges
Currently, only one spacecraft inhabits L2: the US space agency's WMAP probe (which is making observations on which Planck hopes to build).
BBC: World's most daunting parking job
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