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Planck achieves ultra-cold state - BBC News

By telescope - Google News On July 3, 2009 Under Amateur Astronomy, Telescopes
StarShoot Pro Orion's New Astrophotography Camera

BBC News
Planck achieves ultra-cold state
BBC News
Shields and baffling get the telescope down to about -220C. Three active refrigeration systems then lower the onboard environment at the heart of the ...

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