Here's one of the coolest sentences you'll ever read: The International Space Station will soon be the coldest place in the known universe. A new instrument that will be sent to the ISS, called the Cold Atom Lab, will reach temperatures as low as 100 picokelvin -- 100 trillionths of a degree above absolute zero. As matter approaches absolute zero, it starts to exhibit some very odd, rather quantum behavior. Because it's so hard to reach these temperatures, and because the material universe acts so weirdly when you get down that low, no one actually knows what the Cold Atom Lab will discover -- but NASA seems to be pretty certain that the findings will be fascinating, in any case.