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TOPIC: Titan
Blobrana


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RE: Titan
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This image of Titan was taken by the Cassini spaceprobe on June 14, 2007, when it was approximately 261,988 kilometres away.

TITAN84902
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Credit: NASA/JPL/Space Science Institute

The image was taken using the CL1 and CB3 filters.

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Blobrana


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This image of Titan was taken by the Cassini spaceprobe on June 14, 2007, when it was approximately 241,333 kilometres away.

TITAN84866
Expand (64kb, 560 x 560)
Credit: NASA/JPL/Space Science Institute

The image was taken using the CL1 and CB3 filters.

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Blobrana


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This image of Titan was taken by the Cassini spaceprobe on June 14, 2007, when it was approximately 231,022 kilometres away.

Titan084848
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Credit: NASA/JPL/Space Science Institute

The image was taken using the CL1 and CB3 filters.

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Blobrana


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Titan global ocean
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The tentative detection of low frequency radio waves on Saturn's icy moon, Titan, could signal an underground ocean of liquid water, a new study says. If so, it would be good news for the possibility of life beneath the surface of this bizarre world.
Titan's crust is thought to be made largely of water ice, kept rock hard by the prevailing surface temperature of -178° Celsius. But theoretical models of the moon's interior suggest that ammonia-rich water deep beneath the surface could stay liquid, perhaps forming a global ocean.
Now, scientists led by Fernando Simoes of the Centre d'Etudes Terrestres et Planetaires in Saint Maur, France, may have the first observational evidence of such an ocean. Their research is based on an enigmatic radio signal detected by the European Space Agency's Huygens probe as it descended to the moon's surface after being jettisoned from the Cassini spacecraft in 2005.
The radio signal was detected only in a very narrow range of extremely low frequencies around 36 Hertz. The Huygens radio team noticed it just a few hours after the probe's descent and have been working to understand its source since then.

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Blobrana


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RE: Titan
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This Cassini spacecraft view shows the interesting north-south asymmetry in Titan's atmosphere, which is thought to be a seasonal effect.
North on Titan is up and rotated 30 degrees to the right.

Titan2636-br1024
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Credit: NASA/JPL/Space Science Institute

The image was taken using a spectral filter sensitive to wavelengths of infrared light centred at 889 nanometers. The view was acquired with the Cassini spacecraft narrow-angle camera on May 4, 2007 at a distance of approximately 3 million kilometres from Titan and at a Sun-Titan-spacecraft, or phase, angle of 54 degrees. Image scale is 18 kilometres per pixel.

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Blobrana


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Today, two and a half years after the historic landing of ESAs Huygens probe on Titan, a new set of results on Saturns largest moon is ready to be presented. Titan, as seen through the eyes of Huygens still holds exciting surprises, scientists say.
 On 14 January 2005, after a seven-year voyage on board the NASA/ESA/ASI Cassini spacecraft, ESAs Huygens probe spent 2 hours and 28 minutes descending by parachute to land on Titan. It then sent transmissions from the surface for another seventy minutes before Cassini moved out of range.

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Blobrana


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This image mosaic, covering an area of 120 by 160 kilometres, was obtained thanks to the images taken by Descent Imager and Spectral Radiometer (DISR) on board Huygens, and provides the complete coverage of Titan obtained by DISR. The coverage extends out well beyond the nearest dark dunes (indicated by the arrows) located about 30 kilometres north of the landing site and later imaged by Cassini's radar.

Ttitan2627-br560
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Credits: ESA/NASA/JPL/University of Arizona

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Blobrana


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Huygens’ path to Titan
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Scientists now know exactly how Huygens made its way to the surface of Titan. The trajectory reconstruction is the culmination of two years of effort and is particularly valuable for a correct interpretation of the observations from all six scientific investigations on board.
It is the culmination of eight years of preparatory work and two years of data analysis by the Huygens Descent Trajectory Working Group.

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Blobrana


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Dissecting the dirt on Titan
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Planetary scientists are a step closer to understanding the composition of the dust in Titans atmosphere. A decade-long programme of laboratory studies, aiming to reproduce Titans unique dust, or aerosol population in specially constructed reactors, has proved invaluable.
Aerosols are small, solid particles that float in the air. On Earth, they are often the result of pollutants in the atmosphere. On Titan, they occur naturally and are abundant in the atmosphere, masking its surface.

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Blobrana


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Revealing Titan’s rugged surface
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During its two and a half hour descent, the cameras on Huygens showed eager scientists on Earth spectacular regions of bright highlands with river drainages and canyons, bounded by dark plains on Titan. New information about the composition of the landing region is now ready for the public.
Since the mission, planetary scientists have been using the Radar System and the Visible and Infrared Mapping Spectrometer (VIMS), on board the orbiting Cassini spacecraft to investigate the composition of the region Huygens flew over.

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