NASA Cassini-Huygens Collection

Titan's Whispers

Here on the Gallery page you can find the very latest images, videos and products from the Cassini-Huygens mission to Saturn, including the spectacular launch, spacecraft assembly and the exciting trip to Saturn.

This image shows Titan data from the passive radiometer mode of Cassini's radar instrument overlaid onto a visible-light image mosaic from the spacecraft's imaging science subsystem. The contours and colors show Titan's radiation at microwave wavelengths (about two centimeters or 0.79 inch), while the light and dark shading is from the optical image. This microwave radiation comes directly from Titan itself, rather than being a reflection from the Sun as detected in visible-light images.

The microwave brightness tells us about surface properties such as temperature composition and roughness. The brightness decreases when the angle of the surface is tilted from the viewer, causing the edges of Titan's disc to look dark relative to the center even though they are probably at the same temperature. Since the variations in brightness are likely larger than variations in physical temperature, they are probably due to compositional or structural properties of the surface.

There is a significant correlation between areas that are bright in the microwave and dark in the optical, and vice versa. Comparison of data sets will help determine the causes of these variations.

The radar data was taken on Oct. 26, 2004, during Cassini's first close encounter with Titan. The imaging science subsystem data was acquired on approach to the moon.

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 Cassini-Huygens 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 instrument team is based at NASA's Jet Propulsion Laboratory, Pasadena, Calif.

For the latest news about the Cassini-Huygens mission visit http://www.nasa.gov…For more information about the mission visit http://saturn.jpl.n….

Image Credit:
NASA/JPL

gallery

images

Cassini

mission

Huygens

probe

Saturn

explore

videos

movies

Jupiter

flyby

spacecraft

assembly

launch

flight

operations facilities

mpeg

Quicktime

Saturn

Cassini

Jupiter

Cassini-Huygens

Huygens Probe

Moon

Titan

Cassini Orbiter

Sun

Imaging Science Subsystem (ISS)

Saturn

Jupiter

Jet Propulsion Laboratory

California

Washington

Jet Propulsion Laboratory (JPL)

Washington, D.C.

SPD-SATRN-1169

http://saturn.jpl.n…