Ball lightning

From Kook Science

"Le tonnerre en boule" from Flammarion's L'Atmosphere (Paris: Hachette, 1873).

Ball lightning (also known as globular lightning, thunder ball, etc.) is an atmospheric phenomena consisting of, as the name suggests, a form of lightning in a ball-shape, though the term is often applied to many disparate forms of aerial luminosity. The phenomena is today most often studied through the lens of plasma physics, but has also been considered in relation to cosmic rays and quantum mechanics.