Tiny quantum tornadoes observed in ultracold gases of fermionic atoms provide definitive evidence of superfluidity, and open up new vistas in the modelling of quantum many-body systems. Almost exactly ten years after the first observation of a Bose-Einstein condensate (EEC) in ultracold atomic gases consisting of so-called bosons, a similar revolution is now unfolding. Evidence has piled up that atoms of the class of particles known as fermions can also be cooled down to a superfluid state. On page 1047 of this issue, Zwierlein et al. present a final, spectacular proof for superfluidity -frictionless flow - in an ultracold gas of fermionic atoms.
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