coldest place
23 Dec 2011Is there a place in the Universe which is colder than the CMB? (Planck’s cryostats don’t count as an answer).
bonus points: Which is the hottest place in the Universe?
Is there a place in the Universe which is colder than the CMB? (Planck’s cryostats don’t count as an answer).
bonus points: Which is the hottest place in the Universe?