Dark Matter –“A Strange Quantum Superfluid That Flows Without Entropy”

Galaxy Protocluster

 

“A superfluid is a very interesting kind of fluid,” says physicist Justin Khoury, a professor at the University of Pennsylvania, who focuses on the interface of particle physics and cosmology. “Most substances we find in the laboratory form a solid when cooled to a low enough temperature. But a certain set of substances, such as liquid helium, effectively remain a liquid all the way to absolute zero temperature.

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