Blue jet

A blue jet is a luminous electrical discharge that shoots upward from the top of a thunderstorm cloud at speeds of roughly 100 to 140 kilometers per second, forming a narrowing, cone-shaped channel that can reach around 50 kilometers in altitude and lasts 200 to 300 milliseconds. Blue jets are brighter than the related phenomenon known as red sprites and take their name from their distinctive blue color, produced by emissions from neutral and ionized nitrogen molecules in the blue and near-ultraviolet part of the spectrum. They arise from an electrical discharge between the positively charged upper region of a thundercloud and a negatively charged layer of atmosphere above it, and are associated with thunderstorms producing high rates of negative cloud-to-ground lightning, occurring considerably less often than sprites. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/