Huge Jellyfish Sprite Lightning over the Caribbean

This is a copy and paste from the Nasa website : ’A-BOMB’ SPRITE OVER THE CARIBBEAN: On Sept. 18th, Frankie Lucena of Cabo Rojo, Puerto Rico, photographed an enormous sprite over the Caribbean Sea. For a split-second, the sky was illuminated by a mushroom-shaped flash:Oscar van der Velde, a member of the Lightning Research Group at the Universitat Politècnica de Catalunya, explains what Lucena photographed: “This type of sprite is often called ’jellyfish’ or ’A-bomb,’ and ranks as the larg