Neptune’s stormy disposition

Neptune’s stormy disposition

Fig. 11.4 . The weather on Neptune is recorded in this image, which combines simultaneous observations on 11 August 1998 with the Hubble Space Telescope and NASA’s InfraRed Telescope Facility on Mauna Kea, Hawaii. The predominant blue color of the planet is a result of absorption of red and infrared light by Neptune’s methane atmosphere. Clouds elevated above most of the methane absorption appear white. Neptune’s powerful jet stream, where winds blow at nearly 400 meters per second, is centered at the dark blue belt near Neptune’s equator. The Great Dark Spot detected when the Voyager 2 spacecraft visited Neptune in August 1989 has completely disappeared in this image, taken nine years later. (Courtesy of NASA/STScI/IRTF.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University