Polarized light around a young nebula. Named prior to telescopes that revealed its true shape, the Boomerang Nebula is a very cold place with a temperature of about -459 degrees Fahrenheit or 1 K. Credit: NASA, ESA and The Hubble Heritage Team [STScI/AURA].
All kinds of things give off light in a way that is useful to us, either naturally or by design. Some objects are designed to produce bright light to work by, others have just enough of a glow to tell us where things are located in the dark. All of these glows have something in common, they are created from the changes happening to electrons in the atoms that are glowing. Light, whether it is visible, infrared, ultraviolet, or even farther afield, relates to electrons and atoms.
Learn how those neat glow-in-the-dark things work.
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