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Despeckled Radar Images Give a Clearer View of Titan’s Shores

Before despeckling (top) and after (bottom) images of portions of the shoreline around Ligeia Mare, Titan's second-largest hydrocarbon sea.  Credits: NASA/JPL-Caltech/ASI

Before despeckling (top) and after (bottom) images of portions of the shoreline around Ligeia Mare, Titan’s second-largest hydrocarbon sea. Credits: NASA/JPL-Caltech/ASI

At 1,600 miles (2,576 km) across Titan is by far Saturn’s largest moon – in fact it’s the second-largest satellite in the solar system. It’s also the only world besides Earth where liquids have been found in large amounts on the surface, in the form of lakes and streams of frigid methane and ethane. This makes Titan an intriguing subject of study for planetary scientists, but unfortunately it’s not all that easy to get a good look at its surface because of its thick orange clouds and dense atmosphere.

Now, researchers have developed a “despeckling” method to smooth out Cassini’s typically grainy radar maps, giving scientists a whole new way to look at Titan’s alien — yet surprisingly Earth-like — surface.

Read the rest of my article on Discovery News here. 

Remembering Huygens’ Titan Landing, Ten Years Later

First color image from the surface of Titan, Jan. 14, 2005 (ESA/NASA/JPL/University of Arizona)

This incredible image was captured ten years ago today, on January 14, 2005. It shows the murky surface of Saturn’s moon Titan as seen by the European Space Agency’s Huygens probe after it made its historic descent through the moon’s thick haze and clouds and landed in a frozen plain of crusty methane mud and icy pebbles. During the descent and after landing Huygens returned data for several hours before communication was lost. The groundbreaking images and information it sent back has proved invaluable to scientists studying this unique and mysterious moon, which is at the same time extremely alien and surprisingly Earth-like.

“It was eerie…we saw bright hills above a dark plain, a weird combination of light and dark. It was like seeing a landscape out of Dante.”

– Jonathan Lunine, Cassini-Huygens mission scientist

Learn more about the Huygens landing here and check out an incredible video below zooming in a billion times from Saturn orbit to Titan’s surface:

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Saturn and Titan Show Off Their Crescents

Cassini image of Saturn and Titan from Aug. 11, 2013 (NASA/JPL-Caltech/SSI)

Cassini image of Saturn and Titan from Aug. 11, 2013 (NASA/JPL-Caltech/SSI)

It may not be in color but that doesn’t make it any less beautiful: this stunning image from Cassini shows Saturn and its largest moon Titan – the second-largest moon in our solar system, after Jupiter’s Ganymede – from their night sides, both showing their crescents against the blackness of space.

Titan’s crescent nearly wraps all the way around its globe, because of the way its thick atmosphere scatters sunlight.

The view was obtained at a distance of approximately 1.1 million miles (1.7 million kilometers) from about 3 degrees above the ringplane. The image was taken in violet wavelengths with Cassini’s wide-angle camera (WAC) on Aug. 11, 2013.

Source: NASA/JPL

Cassini Spots the Sun Shining on Titan’s Sea

Infrared mosaic image showing sunglint off Titan's Kraken Mare. (NASA/JPL-Caltech/University of Arizona/University of Idaho)

Infrared mosaic image showing sunglint off Titan’s Kraken Mare. (NASA/JPL-Caltech/University of Arizona/University of Idaho)

There’s nothing like the beautiful reflection of sunlight off the mirrored surface of a lovely lake… regardless if you’re on Earth or Saturn’s moon Titan! This picture, a mosaic of images acquired by Cassini’s Visual Infrared and Mapping Spectrometer (VIMS) instrument during a flyby on August 21, 2014, shows exactly that: sunglint reflecting off the super-smooth surface of the moon’s largest polar lakes.

(Except unlike on Earth this lake isn’t filled with liquid water but rather liquid methane and ethane!)

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Cassini Watches Clouds Form Over Titan’s Methane Sea

Animation of clouds forming over Ligeia Mare, one of Titan's many large methane lakes (NASA/JPL-Caltech/SSI)

Animation of clouds forming over Ligeia Mare, one of Titan’s many large methane lakes (NASA/JPL-Caltech/SSI)

What’s the weather forecast on Titan? Well if you’re planning a vacation down by the shores of Ligeia Mare you may get some cloudy skies, if what happened at the end of July repeats itself!

The animation above was made from images acquired by Cassini during a flyby of Titan in July 2014, showing the formation and dissipation of bright methane clouds over one of the moon’s polar lakes. Spanning a period of two days, the images reveal what may be the start of summer weather in Titan’s northern hemisphere… or just a bit of isolated “lake effect” cloudiness.

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Just Another Hazy Day on Titan

Color-composite of Titan made from raw images acquired by Cassini on April 7, 2014. (NASA/JPL-Caltech/SSI/J. Major)

Color-composite of Titan made from raw images acquired by Cassini on April 7, 2014. (NASA/JPL-Caltech/SSI/J. Major)

The weather forecast for Titan? Cloudy, hazy, and cold — just like every other day! The image here is a color-composite made from raw data captured by Cassini during a flyby on April 7, 2014, and it shows a look at the two main features of Titan’s atmosphere: a thick orange “smog” made of organic compounds created by the breakdown of nitrogen and methane by UV light, and a wispy blue upper-level haze composed of complex hydrocarbons.

Cassini was approximately 19,076 miles (30,700 km) from Titan when these particular images were captured.

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