Radar Reaches Titan&#39;s Surface Through Clouds
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After making the closest-ever flyby of mysterious Saturn moon Titan this week, the Cassini probe has sent back radar data that reveals some facts about the planet-like moon&#39;s surface.
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A NASA spacecraft has found evidence of huge seas, likely filled with liquid methane or ethane, in the high northern latitudes of Saturn&#39;s moon Titan.
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The Cassini flyby of Titan sent back the most detailed surface images, but the 1000 kilometer cloud formation near the south pole has scientists stumped.
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NASAâs Cassini spacecraft pierced some of the thick veil of haze that hides Saturnâs giant moon at 8:25 pm CDT Tuesday as it passed within 750 miles of Titan.
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This image is one of the closest ever taken of Saturn&#39;s hazy moon Titan. It was captured by Cassini&#39;s imaging science subsystem on Oct. 26, 2004, as the spacecraft flew by Titan.
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Cassini&#39;s close fly-by of Titan, Saturn&#39;s largest moon, has left scientists with no clear idea of what to expect when the Huygens probe lands on the alien world, despite the amazingly detailed images they now have of the surface.
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Photographs and radar surveys from the Cassini spacecraft&#39;s Tuesday-night flyby of Saturn&#39;s mysterious moon Titan are raising more questions than they&#39;re answering, say NASA scientists.
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The European Space Agency prepares to send its Huygens probe hurtling through the smoggy atmosphere of Saturn's moon, Titan. What the probe will find on the other side is anybody's guess. By Amit Asaravala.
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The Huygens probe has been released and is heading for Saturn&#39;s largest moon, Titan, scientists have confirmed. A signal that the robot lab had separated from its mothership, Cassini, was received by the US
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Summary - (Nov 8, 2004) NASA&#39;s Cassini spacecraft took this image of Titan as it sped past the moon on Oct. 26, 2004. It was taken from an altitude of 2,500 km (1,553 miles) using the spacecraft&#39;s aperture
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The European probe Huygens will listen for alien thunderstorms as it descends through the atmosphere of Saturn&#39;s moon, Titan, UniverseToday.
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The first targeted flyby of Titan occurs on Tuesday, October 26, 2004 at 15:30 UTC (8:30 am Pacific time). Cassini&#39;s closest approach to Saturn&#39;s largest satellite is at an altitude of 1200 km (746 miles) above
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When the Cassini spacecraft&#39;s Huygens probe parachutes to the surface of the Saturn moon Titan on Jan. 14, it could splash into a lake, burrow into a powdery drift or slam onto rock-hard ice.
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The spacecraft passed within 746 miles of Titan&#39;s surface and should send back pictures 100 times sharper than past views. Those images are to be released beginning today.
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Snowing at the poles Scientists suspect that ethane falls as rain or snow on Saturn's moon Titan, after the Cassini spacecraft identified a huge cloud of the hydrocarbon in its atmosphere.â¦
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THE surface of Saturn&#39;s moon Titan may be covered by thick drifts of combustible organic &quot;snow&quot; floating on lakes of liquid methane or water and ammonia ice flows, NASA scientists said on Friday.
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Titan 'T28' Mosaic (top image)Bright and dark terrain on Titan's trailing hemisphere is revealed by Cassini's Imaging Science Subsystem in this mosaic of images taken during the T28 flyby in April 2007.The region shown in this image, centred on the northern part of Titan's trailing hemisphere (near 31.2Â° North, 139.3Â° East), had only been seen at very low resolution until February 2007, when Cassini flew over this area for the first time. This mosaic consists of images taken during one of a series of flybys in early 2007 designed to study this long unavailable part of Titan (5150 kilometres across). Several intriguing surface features that warrant further study can be seen in this mosaic. Along the top of the mosaic is a series of dark lineaments, or linear features, that stand out against the bland northern, mid-latitude terrain. These features were also observed by the RADAR instrument in December 2006 and represent an area of potential future co-analysis for the RADAR and camera teams. Another such region is the large bright area known as Adiri at bottom centre, also imaged by RADAR in October 2005. The mosaic shows a number of dark areas within Adiri that line up with small dune fields observed by RADAR. A portion of the dark terrain surrounding Adiri was also observed by RADAR in 2005 and was similarly found to consist of large stretches of longitudinal dune fields - further supporting the correlation between equatorial dark regions and dune 'seas'. To the east of Adiri is a dark spot surrounded by a ring of bright material, which may be associated with an impact crater similar to Sinlap, discovered earlier in the mission. This mosaic consists of 29 separate frames using a total of 116 images. Each frame consists of three images, taken using a filter sensitive to near-infrared light centred at 938 nanometres, allowing for observations of Titan's surface and lower atmosphere, added together. An image taken using a filter sensitive to visible light centred at 619 nanometres was then subtracted from the product, effectively removing the lower atmosphere contribution to the brightness values in the image, increasing image contrast and improving the visibility of surface features. This process is also intended to reduce noise, but some camera artefacts still remain, such as a dark ring caused by dust in the camera system near the bottom right of each frame. The images used for this mosaic were taken on April 11, 2007 from distances ranging from 106 000 to 180 000 kilometres. This mosaic is in an orthographic projection with a pixel scale of 1.5 kilometres per pixel, although the size of resolvable features is likely several times larger, due to atmospheric scattering. An orthographic view is most like the view seen by a distant observer looking through a telescope.Titan 'T28' View