The International Space Station, shown here in 2018, is home to many scientific experiments, including NASA’s Cold Atom Laboratory.
Credit: NASA
The Cold Atom Lab (CAL) is the first facility in orbit to produce clouds of “ultracold” atoms, which can reach a fraction of a degree above absolute zero: -459ºF (-273ºC), the absolute coldest temperature that matter can reach. Nothing in nature is known to hit the temperatures achieved in laboratories like CAL, which means the orbiting facility is regularly the coldest known spot in the universe.
NASA’s Cold Atom Laboratory on the International Space Station is regularly the coldest known spot in the universe...
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