Uranus

The atmosphere of Uranus is composed of hydrogen, helium, methane and small amounts of acetylene and other hydrocarbons. Methane in the upper atmosphere absorbs red light, giving Uranus its blue-green color. The atmosphere is arranged into clouds running at constant latitudes, similar to the orientation of the more vivid latitudinal bands seen on Jupiter and Saturn. Winds at mid latitudes on Uranus blow in the direction of the planet's rotation. These winds blow at velocities of meters per second miles per hour. Radio science experiments found winds of about meters per second blowing in the opposite direction at the equator.
Uranus is distinguished by the fact that it is tipped on its side. Its unusual position is thought to be the result of a collision with a planet sized body early in the solar system's history. Voyager found that one of the most striking influences of this sideways position is its effect on the tail of the magnetic field, which is itself tilted degrees from the planet's axis of rotation. The magnetotail was shown to be twisted by the planet's rotation into a long corkscrew shape behind the planet.

The magnetic field source is unknown; the electrically conductive, super pressurized ocean of water and ammonia once thought to lie between the core and the atmosphere now appears to be nonexistent. The magnetic fields of Earth and other planets are believed to arise from electrical currents produced in their molten cores. There may be a large number of narrow rings, or possibly incomplete rings or ring arcs, as small as in width.

The individual ring particles were found to be of low reflectivity. At least one ring, the epsilon, was found to be gray in color. The moons Cordelia and Ophelia act as shepherd satellites for the epsilon ring. The greenish color of it atmosphere is due to methane and This view of Uranus was acquired by Voyager on January. The blue-green appearance of its atmosphere results from methane and high altitude photochemical smog. This gas absorbs red wavelengths from the incoming sunlight, leaving the predominant bluish color seen here.