In Voyager 2 made our first close encounter with the stunning blue planet Neptune. Its surprisingly turbulent, storm-laden atmosphere, this far from the sun, was clearly being driven by heat from deep within the planet [Photo: Nasa/Corbis]
By tracking atmospheric features on Neptune, a UA planetary scientist has accurately determined the planet's rotation, a feat that had not been previously achieved for any of the gas planets in our solar system except Jupiter.
(August Voyager 2 was the first spacecraft to observe the planet Neptune and its two satellites: Triton, the largest, and Nereid. The most obvious feature of the planet is its blue color, the result of methane in the atmosphere.