In school we all learned that there are 3 states of matter; solid, liquid and gas. It turns out that we have been lied to. Most people will have heard of plasma which is sometimes called the 4th state of matter but there are many more. Have you ever heard of the Bose-Einstein Condensate phase of matter? Prepare yourself for some truly mindblowing stuff.
More info: Wikipedia - Bose-Einstein condensate
This clip was taken from a two part BBC series called absolute zero. Part 1 is called "The conquest of cold" and part 2 "The race for absolute zero". PBS has cut down that material to a single episode called absolute zero (1h40, HD) but I would recommend watching the longer BBC version.
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