Posts Tagged titan
Tethys and Titan
Hard to decide what to post after yesterday’s anniversary and news… all I know is, posting retro space race ads seemed wildly inappropriate. So here you go. It’s Titan with Tethys in the distance, courtesy of Cassini.
What’s that behind Titan? It’s another of Saturn’s moons: Tethys. The robotic Cassini spacecraft orbiting Saturn captured the heavily cratered Tethys slipping behind Saturn’s atmosphere-shrouded Titan late last year. The largest crater on Tethys, Odysseus, is easily visible on the distant moon. Titan shows not only its thick and opaque orange lower atmosphere, but also an unusual upper layer of blue-tinted haze. Tethys, at about 2 million kilometers distant, was twice as far from Cassini as was Titan when the above image was taken. In 2004, Cassini released the Hyugens probe which landed on Titan and provided humanity’s first views of the surface of the Solar System’s only known lake-bearing moon.
Titan's Atmosphere
Posted by Danielle in Perspectives on October 9, 2008
This NASA Image of the Day shows Saturn’s moon Titan, with a beautiful and complementary atmospheric halo.
With its thick, distended atmosphere, Titan’s orange globe shines softly, encircled by a thin halo of purple light-scattering haze.
This composite image was created using taken using blue, green and red spectral filters to create this enhanced-color view; the color images were combined with an ultraviolet view that makes the high-altitude, detached layer of haze visible. The ultraviolet part of the composite image was given a purplish hue to match the bluish-purple color of the upper atmospheric haze seen in visible light.
Small particles that populate high hazes in Titan’s atmosphere scatter short wavelengths more efficiently than longer visible or infrared wavelengths, so the best possible observations of the detached layer are made in ultraviolet light.
Image Credit: NASA/JPL/Space Science Institute
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