Uranus' axis of rotation is tilted nearly 98°, almost perpendicular to its orbit. Consequently, the seasons and days on Uranus are strange. At times, the north pole points toward the Sun. At other times the south pole does.
As Voyager 2 approached Uranus in January 1986, cameras recorded the planet as it would be seen by human eyes (left). After the image is enhanced, slight variations in the upper atmosphere cause concentric banding around the south pole (right).
The blue-green natural color of the planet is the color of the methane gas that comprises the atmosphere.
