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Coolest spacecraft ever in orbit around L2

spacefellowship.com » 2009 » July » 3rd » Coolest spacecraft ever in orbit around L2

Tagged: esa, planck

(ESA) – Last night, the detectors of Planck’s High Frequency Instrument reached their amazingly low operational temperature of -273°C, making them the coldest known objects in space. The spacecraft has also just entered its final orbit around the second Lagrange point of the Sun-Earth system, L2. Planck is equipped with a passive cooling system that brings [...] … Continue Reading »

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