Winter May Seem Cold, But It's Nothing Compared To Outer Space

Although temperatures plummet on the dark side of the moon and the shadowy craters of Pluto, those locales look balmy compared with the Boomerang Nebula. About 5,000 light-years away, this star system is just 1 kelvin above absolute zero. (Credit: R. Sahai and J. Trauger/JPL, NASA/ESA)