This 'dark opponent' discharges from storm clouds and flings antimatter into space. Astrophysicists and meteorologists are now trying to understand what they have termed ‘dark lightning’.
Lightning occurs due to charge separation in a cloud. When negatively charged electrons build up at the base of a thundercloud, anything it passes over becomes positively charged. If the cloud passes over a tall object, like a tall building or tree, these electrons jump, creating the ‘pitchfork’ of light you see streaking across the sky.