Page last updated at 18:43 GMT, Wednesday, 13 May 2009 19:43 UK

Telescopes ready for rocket ride

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Europe is set to launch the 1.9bn-euro Herschel and Planck telescopes from the Kourou spaceport in French Guiana.

Göran Pilbratt, Esa's project scientist on Herschel, describes the telescope's aims

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