What is the coldest place in the universe?

1 Answer
May 31, 2016

The Boomerang Nebula is the coldest place we have found.


Apart from experiments in which we have artificially generated temperatures a tiny fraction above #0K#, (which would make the coldest place in the universe somewhere in Helsinki), the answer is probably the Boomerang Nebula, located about #5000# light years away in the constellation of Centaurus.

The rapidly expanding gas around the star system has caused the temperature to drop from the more normal background temperature of #2.7K# or so to about the #1K# mark.