When helium is cooled to extreme temperatures, just a few degrees away from absolute zero (-460˚F or -273˚C), it turns into a superfluid, meaning it can flow without friction. It can climb up and over the sides of a glass. It can leak through molecule-think cracks in a container. If it starts flowing like a fountain, it will never stop.
Helium can also work against gravity!!Did you know that??
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