When we think of lightning, we usually think of the big bright flashes coming from the cloud.
But sometimes lightning doesn't come down to the ground, it just goes to another cloud.
That is called Cloud to Cloud lightning, or sometimes if it's just inside the same cloud it's called intra-cloud lightning.
Sometimes people just use the letters CC for cloud to cloud, or IC for intra-cloud.
(from: wikipedia - lightning)
Kid Facts - Blast from the past: Graphite
