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Lowest Temperature ever recorded

We have been taught that the lowest temperature that can ever reach in this whole Universe is 0 K, which is equal to -273.15 celsius.  In Massachusetts Institute of Technology (MIT) lab i 2003, the lowest temperature that scientists and researcher recorded was 0.45 nanokelvin. It  is the lowest temperature ever recorded by mankind in which a cloud of Sodium atoms was cooled to the lowest extent possible. The temperature was less than half one-billionth of a degree kelvin above absolute
temperature.

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