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Rare earths for spatial measurements

Researchers from CEA-INAC developed a small cryorefrigerator, replacing liquid helium by a more efficient rare-earths based material.
Measuring instruments embarked on board satellites are usually cooled with liquid helium to ensure accurate operation. The problem is that this consumable runs out as fast as its ability to store energy at low temperatures, which shortens the operation duration of spatial cooling systems.


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