Superfluid Helium is Wacky

Again with the Scientific American. This time they've got an article about superfluid helium. If you cool helium to below –452 degrees Fahrenheit (–269 degrees Celsius) it becomes a liquid that flows without friction. Here's the money quote:

"If you set [down] a cup with a liquid circulating around and you come back 10 minutes later, of course it's stopped moving," says John Beamish, an experimental physicist at the University of Alberta in Edmonton. Atoms in the liquid will collide with one another and slow down. "But if you did that with helium at low temperature and came back a million years later," he says, "it would still be moving."

I think the precise, scientific term for that is, "Woah".