Radio astronomers have used microwave observations to spot the first polar cyclone on Uranus, seen here as a light-colored dot to the right of center in each image of the planet. The images use microwave wavelengths (K, Ka, and Q from left to right). Different color are used for each. The findings confirm that all planets with substantial atmospheres in our solar system show signs of a vortex around their poles. This true of the gas giants and the rocky planets.