Lowest natural temperature
You can do a few picoK in the lab
If you're searching for the ideal place to hold your Halloween party next Thursday, may we suggest the Pac-Man-ghost-shaped Boomerang Nebula in the constellation Centarus? The Boomerang Nebula in the constellation Centaurus, as imaged by the Atacama Large Millimeter/submillimeter Array (ALMA) telescope 'Casper, the Friendly …
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Is that place where that temperature was achieved still that cold?
Or did they turn the machine off?
I am pretty sure that it's currently no longer as cold as it was, there maybe some other experiment running currently which is making a specific location cold for a short while, but let's face it, they're really not going to stay colder than this place in any kind of timescale that's going to appear on a geological clock.
Hmm, lots of (well, several anyway) folks commenting on the careless use of "coldest in the universe". Yet the article states "it's the coldest place in our known universe", and the abstract of the paper it's based on states "coldest known object in the universe".
So either there's a bunch of commentards who really need to double-check their reading and comprehension skills, or both the article AND the abstract of the paper were corrected between the time the comments were posted and I read the article (about 15 minutes before this comment was posted - see posting date...).