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ESA: "Planck" reached its destination
Rome, Italy - In orbit around the L2. From there, for two years, the ESA's space observatory will hear the echo by Big Bang
![](https://www.avionews.it/resources/big/3aacc72074c0928b249496dc5f4d1834.jpg.webp)
"On Friday night, the detectors of Planck's High Frequency Instrument reached their amazingly low operational temperature of -273.05°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 its temperature down to about -230°C b...
fra/pec - 1106749
AVIONEWS - World Aeronautical Press Agency
AVIONEWS - World Aeronautical Press Agency