Absolute Zero is the state of fundamental particles where they have minimal vibrational motion. It is the lowest limit of the thermodynamic temperature scale. According to the laws of thermodynamics absolute zero can never be attained. Removing all the technicalities, the kinetic energy of the ground state cannot be removed. At very low temperatures the molecules do not collide in the conventional sense, instead their quantum mechanical wave’s stretch and overlap. This phenomenon is called ‘Bose-Einstein condensate’ or a ‘super atom’
The coldest known place in the universe is the Boomerang Nebula, 5,000 light years away from us and the gases blowing out from a central dying is said to reach 1 kelvin, only one degree warmer than absolute zero. The lowest temperature ever recorded was back here on Earth in a laboratory where they chilled a cloud of sodium atoms to a record-breaking 0.45 nanokelvin.
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