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Friday, January 29, 2021

"Blue Jet" lightning that goes up, towards outer space

 In electrostatics, we get into the basic concepts for how we think 'normal' lightning is formed. Ice crystals bumping and rubbing together in a storm cloud is the friction needed to separate charge, and turn a cloud into a large battery or capacitor. 

But "blue jet" lightning can be observed both on the ground and from outer space. This article has a wonderful photo from the space station, which captured the flash with certain detectors. Scientists are working on understanding this process fully - the blue glow is due to mostly nitrogen being in the upper reaches of the atmosphere, before heading into outer space. 



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