[dsc]

I thought there were places in space that reached absolute zero.

[Paladin2]

Difficult to measure that, I suspect.

[rarestia]

Absolute zero is theoretical insomuch as they’ve never seen true 0K. Places in space get below 1K but only fractionally (e.g. 0.05K).

Absolute zero is the point where matter ceases to “vibrate,” as I understand it. Not sure that’s actually measurable.

[TexasGator]

http://www.iflscience.com/physics/coldest-temperature-universe-created-american-laboratory/

[ProtectOurFreedom]

Nope, not anywhere in nature will you find absolute zero. Of note a few months ago:

After 100 Years of Debate, Hitting Absolute Zero Has Been Declared Mathematically Impossible

The third law of thermodynamics finally gets its proof.

March 15, 2017

After more than 100 years of debate featuring the likes of Einstein himself, physicists have finally offered up mathematical proof of the third law of thermodynamics, which states that a temperature of absolute zero cannot be physically achieved because it's impossible for the entropy (or disorder) of a system to hit zero.

While scientists have long suspected that there's an intrinsic 'speed limit' on the act of cooling in our Universe that prevents us from ever achieving absolute zero (0 Kelvin, -273.15°C, or -459.67°F), this is the strongest evidence yet that our current laws of physics hold true when it comes to the lowest possible temperature.

"We show that you can't actually cool a system to absolute zero with a finite amount of resources and we went a step further," one of the team, Lluis Masanes from University College London, told IFLScience.

"We then conclude that it is impossible to cool a system to absolute zero in a finite time, and we established a relation between time and the lowest possible temperature. It's the speed of cooling."

[Tolerance Sucks Rocks]

I thought there were places in space that reached absolute zero.

I'm guessing that there is too much cosmic background radiation for that to happen.