What does thunder look like?
8 May 2015 Last updated at 13:33 BST
We all know the sound of thunder but scientists have now captured visual footage of what happens when thunder the skies start to rumble.
Researchers in America fired a specially made rocket into storm clouds to see exactly what happens.
It contained special conductors that lit up to create the first visual image of what happens when the air molecules that cause thunder explode.
Watch the thunder in action here.