When we say huge, we mean it. Within days, the storm circled the entire planet. Earths laid side by side. The planet's North Pole was tilted toward the Sun, so the rays were striking the hemisphere directly. If that sounds familiar, it's because the same kind of tilt causes our seasons on Earth.
Astronomers suspect it did.
They say the rays penetrated the outer layers of the planet's thick atmosphere, heating up gases down below. Right, the warm gases rose, just as heated gases do on Earth. Ammonia, one of the gases in the mixture, froze into countless icelike crystals. Those same winds eventually tore the storm apart. But don' t worry.