Scientists create the coldest matter in the universe in a laboratory

An illustration shows trapped ytterbium atoms cooled to temperatures about 3 billion times colder than deep space
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A team of researchers has cooled matter down to a billionth of a degree from absolute zero, colder even than the deepest depths of space, far from any star.

Interstellar space never gets that cold due to the fact that it is uniformly filled with the cosmic microwave background (CMB), a form of radiation left over from an event that occurred shortly after the big Bang when the universe it was in his childhood. The cooled matter is even colder than the coldest known region of space, the Boomerang Nebulalocated at 3,000 Light years of the Earth, which has a temperature of just one degree above absolute zero.

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