The Boomerang Nebula is the coldest known natural location in the universe, with a temperature of 1 degree Kelvin or -458 farenheight. The coldest known temperature ever achieved is a state of matter called the Bose-Einstein condensate where a dilute vapor of two thousand rubidium-87 atoms are cooled using a combination of lasers and magnetic evaporation to less than a billionth of a degree Kelvin. See what Im saying is… I know cold. Absolute zero. The moment where matter cannot exist, because it cannot move. And time stops. Like the day you left.