Coolest thing in space!

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The SPIRE instrument coolers were cycled for the first time yesterday and all went well. SPIRE is now, at 292mK, officially the coldest thing in space!

It should be noted that the Planck HFI will get down to about 100mK when it goes into full operation, but that is several weeks away yet, so SPIRE gets to bask in the glory (if you can bask in something so cold!) for now.

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