Hydrogen is becoming superfluid

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When a material takes on a superfluid state, it loses any internal friction. As a result, it can form extremely fast vortexes, flow upwards and penetrate through smallest gaps. Superfluidity is an exotic quantum state that only arises under extreme conditions. However, there are substances such as the isotope helium-3, which become superfluid even at temperatures just above absolute zero. For a long time it was unclear whether molecular hydrogen…

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After more than 50 years, it has been proven that hydrogen molecules can pass into the exotic state of "superfluidity" at extremely low temperatures – they become a friction-free quantum liquid, as an experiment has confirmed for the first time. So far, it has been unclear whether hydrogen can become superfluid, because it freezes even before reaching critical temperature. However, very small droplets with less than 20 hydrogen molecules can sti…