Friday, January 12

Huygens’s second landing anniversary – the surprises continue

This image of Titan’s surface was taken on 14 January 2005 by the Descent Imager/Spectral Radiometer (DISR) on board ESA’s Huygens mission, after touch-down. When printed on letter sized paper, the image shows the size of Titan’s pebbles in their true size. Credits: ESA/NASA/JPL/University of Arizona
The existence of oceans or lakes of liquid methane on Saturn's moon Titan was predicted more than 20 years ago. But with a dense haze preventing a closer look it has not been possible to confirm their presence. Until the Cassini flyby of 22 July 2006, that is. Radar imaging data from the Cassini flyby of Titan provide convincing evidence for large bodies of liquid. This image gives a taste of what Cassini saw. Intensity in this colorized image is proportional to how much radar brightness is returned, or more specifically, the logarithm of the radar backscatter cross-section. The colors are not a representation of what the human eye would see. The lakes, darker than the surrounding terrain, are emphasized here by tinting regions of low backscatter in blue. Radar-brighter regions are shown in tan. The strip of radar imagery is foreshortened to simulate an oblique view of the highest latitude region, seen from a point to its west. Credits: NASA/JPL/USGS


Huygens’s second landing anniversary – the surprises continue from PhysOrg.com

Two years ago, planetary scientists across the world watched as Europe and the US did something amazing. The Huygens descent module drifted down through the hazy atmosphere of Saturn's moon Titan, beaming its data back to Earth via the Cassini mothership. Today, Huygens's data are still continuing to surprise researchers.
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