NASA
Nasa: Astronomy Picture of the Day:the Clouds of Neptune
Changes in the atmosphere of Neptune as recorded by the Hubble Space Telescope.
Space Telescope Science Institute
Hubblesite: Movie of Neptune's Rotation and Weather
This site from Hubblesite provides information on the Hubble Telescope. NASA's Hubble Space Telescope has been used to assemble a time-lapse color movie showing a full 16-hour rotation of the distant planet, Neptune.