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What’s Seeping on Mars? Recurring Slope Lineae

Posted by Matthew Chojnacki on 2014/05/13 09:53 CDT | 13 comments

HiRISE team member Matt Chojnacki tells us about the discovery and formation of these mysterious features forming on Mars in the present day.

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LPSC 2014: Titan's Land of Lakes

Posted by Emily Lakdawalla on 2014/03/31 07:44 CDT | 2 comments

Report from a varied session on Titan's lakes at this year's Lunar and Planetary Science Conference.

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PLANETARY RADIO LIVE: MAVEN Launches for Mars
Live coverage from Pasadena and Cape Canaveral!

Posted by Mat Kaplan on 2013/11/01 04:16 CDT | 2 comments

Host Mat Kaplan will be joined by Bill Nye the Science Guy, Bruce Betts and Emily Lakdawalla for this special live event.

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America's Pastime: Planetary Science
Planetary Radio brings the home team to playoff week

Posted by Mat Kaplan on 2013/10/15 12:16 CDT

Apologies to baseball fans and others for the theme of this week's Planetary Radio preview, which has star player Emily Lakdawalla on deck.

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DPS 2013: Tidbits from Titan

Posted by Emily Lakdawalla on 2013/10/09 05:19 CDT | 8 comments

I attended a few talks at the Division for Planetary Sciences meeting today that concerned Titan's origin and interesting surface, and then one in the afternoon about the atmosphere.

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Mars' valley networks tell us of a dry, then wet, then dry Mars

Posted by Emily Lakdawalla on 2013/09/10 03:43 CDT | 1 comment

Was there rainfall on Mars? Recent work mapping valley networks suggests there probably was -- but only for about 200 million years. What does this mean for life, and the Curiosity mission?

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Caution: Spacecraft Under Construction
Visiting JPL's high bay clean room with NASA Administrator Charles Bolden

Posted by Mat Kaplan on 2013/08/20 10:39 CDT | 1 comment

Join Emily Lakdawalla and Mat Kaplan inside JPL's High Bay 1, where two Earth-revealing missions are being readied for launch.

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The Ancient Snows of Mars on Planetary Radio
Grad student Kat Scanlon leads research indicating precipitation may have helped shape the surface of the red planet

Posted by Mat Kaplan on 2013/08/06 10:20 CDT

Kat Scanlon tells Planetary Radio that Hawaii and Mars have more in common than you might think.

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Planetary Geomorphology Image of the Month: Water tracks on Earth and Mars

Posted by Emily Lakdawalla on 2013/07/18 09:57 CDT | 3 comments

The International Association of Geomorphologists' "planetary geomorphology image of the month," contributed by Joe Levy, features water tracks on Earth and compares them to recurring slope lineae on Mars.

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One Ocean World Among Many

Posted by Jim Bell on 2013/06/03 03:53 CDT | 6 comments

I'm absolutely floored when I stop to think that our beautiful blue ocean is only one of perhaps a half dozen or more oceans on other worlds in our solar system, and only one of probably millions (or more) oceans on other Earth-like planets in our galaxy. Oceans abound!

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LPSC 2013: Seeing in Permanent Shadow

Posted by Michael Poston on 2013/04/03 01:21 CDT | 1 comment

The case for water ice hidden in permanently shadowed regions at the north pole of the planet Mercury received another boost recently. On Wednesday March 20, 2013 at the Lunar and Planetary Science Conference, Nancy Chabot presented the very first visible-light images of what is in the shadows of these polar craters.

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LPSC 2013: License to Chill (or, the solar system's icy moons)

Posted by Emily Lakdawalla on 2013/03/27 11:52 CDT

Reports from the March 19 session at the Lunar and Planetary Science Conference covering eight icy moons in the outer solar system: Ganymede, Europa, Dione, Rhea, Mimas, Tethys, Enceladus, and Miranda.

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Yes, it was once a Martian lake: Curiosity has been sent to the right place

Posted by Emily Lakdawalla on 2013/03/12 05:36 CDT | 7 comments

The news from the Curiosity mission today is this: Curiosity has found, at the site called John Klein, a rock that contains evidence for a past environment that would have been suitable for Earth-like microorganisms.

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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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Notes from Titan talks at the 2012 Lunar and Planetary Science Conference (LPSC)

Posted by Emily Lakdawalla on 2012/03/20 02:16 CDT

One of the topics I found most exciting yesterday was a series of talks on Titan's climate. Bob West showed how Titan's detached haze has shifted with time. Zibi Turtle presented about how Titan's weather has changed with these seasonal changes. Jason Barnes followed up Zibi's talk -- which was based on Cassini camera images -- with a study of the same regions using data from Cassini's imaging spectrometer, trying to figure out what was going on with that brightening. Ralph Lorenz talked about rainfall rates on Titan. Jeff Moore asked: what if Titan hasn't always had a thick atmosphere?

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Has Mars Express MARSIS data proved that Mars once had a northern ocean?

Posted by Emily Lakdawalla on 2012/02/07 05:46 CST

There's been a bit of buzz on the Web this week regarding an ESA press release titled "ESA's Mars Express radar gives strong evidence for former Mars ocean." I don't ordinarily write about press-released science papers, but am making an exception for this one

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Parallel planetary processes create semantic headaches

Posted by Emily Lakdawalla on 2012/01/26 03:55 CST

I ran into a semantic problem today: what to call the science of studying liquids on Titan?

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New Horizons Day 2: Liquids on Pluto's surface?

Posted by Emily Lakdawalla on 2011/09/13 01:27 CDT

Jeff Moore's presentation was cool because of the discussion it stimulated. He considered what exogenic processes might be operating on Pluto's surface. What's an exogenic process? It's something that modifies the shape of the surface from the outside, and doesn't require the body to be geologically active inside.

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Radar glories in Titan rivers

Posted by Emily Lakdawalla on 2010/05/11 04:53 CDT

Wow, this is a cool paper. Here's the gist: the Cassini RADAR team has spotted some river channels on Titan that shine so brightly in radar images, there must be something special going on to explain that brightness.

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News: Dark Spot Near the South Pole: A Candidate Lake on Titan?

Posted by Emily Lakdawalla on 2005/06/28 11:00 CDT

The Cassini imaging team has released an image containing a feature unlike any other that they have seen on Titan. The very dark color, curvaceous outline, and sharp edge of the feature have led them to the conclusion that it could well be the long-theorized but never-before-seen body of liquid hydrocarbons on the surface of Titan.

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