EUROPEAN SPACE AGENCY / D. DUCROS / SCIENCE PHOTO LIBRARY EUROPEAN SPACE AGENCY / D. DUCROS / SCIENCE PHOTO LIBRARY
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Herschel Space Observatory, with Earth in the background, artwork. Herschel carries the largest space telescope ever launched to date. From a point in space called the second Lagrangian point (L2), its 3.5-metre diameter mirror will collect long-wavelength infrared radiation from some of the coolest and most distant objects in the Universe. This mission was launched on 14 May 2009, together with the Planck space observatory. After launch, the two spacecraft separated to carry out their missions.
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