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Titan's ultraviolet haze CASSINI PHOTO RELEASE Posted: November 8, 2005
The haze is composed of small particles whose diameter is comparable to the wavelength of light, which is ultraviolet light centered at 338 nanometers. Particles of this scale scatter sunlight most effectively in the direction opposite to the direction of sunlight. Scientists are still trying to understand what processes produce this thin, high-altitude haze layer. North on Titan is up and tilted 10 degrees to the right. Titan is 5,150 kilometers (3,200 miles) across. This image was taken with the Cassini spacecraft narrow-angle camera at a distance of approximately 917,000 kilometers (570,000 miles) from Titan and at a Sun-Titan-spacecraft, or phase, angle of 145 degrees. Image scale is 5 kilometers (3 miles) per pixel. The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo. |
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NASA Administrator Mike Griffin goes before the U.S. House of Representative's Science Committee to provide an update on the moon-Mars exploration program, the future of the space shuttle and space station, possible servicing of Hubble, cost overruns on the James Webb Space Telescope and the agency's aeronautics research.
The Senate Commerce Committee holds a confirmation hearing on President Bush's nomination of Shana Dale to be the new NASA deputy administrator, replacing former astronaut Fred Gregory.
As NASA celebrates five years of continuous human presence aboard the International Space Station, former resident astronauts from Expedition crews who lived aboard the outpost held this recent question and answer session at the Johnson Space Center.
For the first time since Hurricane Katrina, NASA's Stennis Space Center in Mississippi conducts a test-firing of a space shuttle main engine. The engine was run as part of a certification series on the Advanced Health Management System, which monitors engine performance.
Edwards Air Force Base hosted an open house and air show this past weekend. NASA's Dryden Flight Research Center demonstrated some of its specialized aircraft -- a highly modified NF-15B, a high-altitude ER-2, and F/A-18 and T-34. On the ground, a variety of specialized air and space vehicles were on display in the NASA exhibit, ranging from the Mars rovers to the 747 space shuttle carrier aircraft.