Page "Absolute zero" Paragraph 20
from
Wikipedia
A record cold temperature of 450 ± 80 pK in a Bose – Einstein condensate ( BEC ) of sodium atoms was achieved in 2003 by researchers at MIT.
It's noteworthy that this record's peak emittance black-body wavelength of 6, 400 kilometers is roughly the radius of Earth.
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2.052 seconds.