Do we know the coldest place in our Milky Way Galaxy? Yes, and it's only 5,000 light-years from Earth.
It's the Boomerang Nebula, and it's currently the coldest known natural place in the Universe. It's (−272.15 °C; −457.87 °F) degrees. That's less than two degrees above absolute zero.
The reason why that region is so cold is that a dying Red Giant star in the center of the nebula is ejecting gas in all directions. Researchers think it's so cold because a smaller star threw itself into the heart of a larger red giant,
This caused most of the red giant's matter to be ejected as an ultra-cold outflow of gas and dust.