This is a spectacular image of a Sprite taken by astronaut Nichole “Vapor” Ayers from the ISS on July 3, who wrote -

"Just. Wow. As we went over Mexico and the U.S. this morning, I caught this sprite.

Sprites are TLEs or Transient Luminous Events, that happen above the clouds and are triggered by intense electrical activity in the thunderstorms below. ... scientists can use these types of pictures to better understand the formation, characteristics, and ...."