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Blog Archive

 

Pretty pictures from Cassini's recent Dione flyby

Posted by Emily Lakdawalla on 2012/05/04 05:44 CDT

Cassini performed its last of three close encounters with Enceladus for 2012 two days ago, and followed the flyby with some spectacular images of Dione.

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Titan, Dead or Alive? A Debate

Posted by Emily Lakdawalla on 2012/05/02 10:32 CDT

A lively discussion and debate between planetary polymaths Ralph Lorenz and Jeffrey Moore about Titan, hosted by the Denver Museum of Nature and Science, moderated by David Grinspoon.

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Ski Helene?

Posted by Emily Lakdawalla on 2012/04/20 01:01 CDT | 2 comments

I enthused about these Helene images the first time they came down from Cassini, and then forgot about them, and then was thrilled anew a couple of weeks ago when Daniel Macháček posted his version, processed from data published by the Cassini imaging team on April 1.

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Pretty pictures from Cassini's weekend flybys of Enceladus and Tethys

Posted by Emily Lakdawalla on 2012/04/16 03:11 CDT

Cassini flew past both Enceladus and Tethys on April 14. Here's a cool animation of its approach to Enceladus' plumes, and a pretty global picture of Tethys.

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Pretty picture: Janus and Saturn

Posted by Emily Lakdawalla on 2012/04/04 12:15 CDT

In the last few days as it's rounded periapsis in its current orbit of Saturn, Cassini has taken a lot of great photos of Saturn's moons. One series of photos was taken from pretty close to Janus, a moon about a third the diameter of Enceladus that orbits between the F and G rings. And among those, several were taken with the moon sitting in front of Saturn.

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Notes from the Lunar and Planetary Science Conference: Making Cassini's radar images prettier

Posted by Emily Lakdawalla on 2012/03/26 02:12 CDT

One of the more exciting talks last week was given by Antoine Lucas about his work with Oded Aharonson "denoising" Cassini radar images of Titan. Cassini's radar images are superior to the camera photos in revealing fine details and topography on Titan's surface, but they do suffer from a random noise component that makes the pictures look snowy. Antoine and Oded have developed a method for removing much of this noise.

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