High in the atmosphere, mysterious flashes light up the sky during thunderstorms. Unconfirmed until 1989, these Transient Luminous Events, or TLEs, have mythological names like sprites, TROLLS (Transient Red Optical Luminous Lineaments), and green ghosts. 👻
Now, NASA is on the hunt with a project called Spritacular, where people across the globe photograph and study these TLEs.
NASA’s Illuminate: Out-of-this-world images shining light on our Sun and solar system.