what is the coldest thing in the world?

Question: what is the coldest thing in the world?
- Keywords:
  heat,
  state,
  temperature
Asked by stringer6 to Rosie on 12 Mar 2014.
- Rosie Coates answered on 12 Mar 2014:
  
  Hi @stringer6,
  
  I think the coldest thing in the world was an experiment in Sweden… They made a temperature of around -273.149 degrees Celsius in a process called nuclear spin. I have NO idea what this is!
  
  The coldest natural temperature ever recorded was -60 degrees Celsius in Russia in 1938…
  
  Sorry if that’s not the best answer ever… I gave it a go!

Question: what is the coldest thing in the world?