Atmospheric scientist Oscar van der Velde (www.lightningwizard.com) captured this sprite, as it is called, in Barcelona, Spain on the night of June 5th. Sprites are brief flashes of colored light, lasting only 3 to 10 milliseconds, that happen high above powerful thunderstorms. First discovered in 1989, scientists are still unclear as to what causes the eerie phenomenon. More at LiveScience.