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Our friendly neighborhood asteroid, 2005 YU55 (an animation)

Posted by Emily Lakdawalla on 2011/11/16 02:58 CST

Last week JPL released two animations of asteroid 2005 YU55 made from the radar data acquired by Goldstone's 70-meter radio dish.

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A little fun with Deep Impact deep-sky data

Posted by Emily Lakdawalla on 2011/11/14 05:44 CST

Last week, the team put all of the data from Deep Impact's deep-sky imaging session online, and challenged visitors to see what they could make from it. I made some photos of M51, but there were some challenges.

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Scale solar system presentation slide, version 2

Posted by Emily Lakdawalla on 2011/10/31 01:14 CDT

Last month I posted a preliminary version of a slide I was working on for use in my public presentations, a slide that contains everything in the solar system bigger than 400 kilometers across, and invited comment. I've listened to all of your comments and corrections and come up with a second version.

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Science from Vesta at the Geological Society of America meeting

Posted by Emily Lakdawalla on 2011/10/24 05:55 CDT

I'm nearly two weeks late getting to this news but better late than never, right? There was a press briefing from the Dawn mission at the Geological Society of America (GSA) meeting on October 12.

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Pretty pictures & movies: Eye candy from two recent Cassini Enceladus flybys

Posted by Emily Lakdawalla on 2011/10/20 12:35 CDT

Cassini has completed two very close flybys of Enceladus in less than three weeks, one of them just this morning, and the images from that encounter have already arrived on Earth.

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Saturnlit moon, sunlit fountains

Posted by Emily Lakdawalla on 2011/10/07 06:00 CDT

It's been a week of very heavy science on this blog, so I thought it'd be nice to go into the weekend with a post in which a breathtaking picture speaks for itself, without needing my thousands of words.

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Pretty pictures: Dancing moons

Posted by Emily Lakdawalla on 2011/09/28 12:28 CDT

Since Cassini currently orbits Saturn within the plane of Saturn's rings, it has lots of chances to catch two or more moons in the same photo. One such "mutual event" happened on September 17, featuring four moons: Titan, Dione, Pan, and Pandora.

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A Distant View of Triton

Posted by Ted Stryk on 2011/09/26 01:19 CDT

Ted Stryk reminisces on how he was turned on to astronomy.

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Blast from the past: Pioneer 10 and 11 pictures of Jupiter

Posted by Emily Lakdawalla on 2011/09/07 02:06 CDT

Here's a few pretty pictures that were recently dusted off by Ted Stryk. Pioneer 10 and 11 passed by Jupiter on December 4, 1973, and December 3, 1974, respectively. Here are three pictures from those two encounters, in versions newly processed by Ted from scanned photographic prints found during a research trip to NASA's Ames Research Center.

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Martian clouds in motion

Posted by Emily Lakdawalla on 2011/08/19 10:36 CDT

Behold an amazing (if I do say so myself) video of Martian clouds in motion.

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Wheels on Cape York!

Posted by Emily Lakdawalla on 2011/08/10 02:09 CDT

Opportunity's wheels are on a whole new different kind of rock: she has arrived at the rim of Endeavour crater, on Cape York.

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Pretty picture: five moons for Cassini

Posted by Emily Lakdawalla on 2011/08/03 09:57 CDT

Explaining how to combine the red, green and blue images from a recent Cassini image session containing five of Saturn's moons: Janus, Pandora, Enceladus, Mimas and Rhea.

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What I see in the first high-res Dawn images of Vesta

Posted by Emily Lakdawalla on 2011/08/02 11:22 CDT

I had to wait until the kids were in bed and the husband fed last night before I finally had time to sit down and really look at the Dawn images of Vesta. And I still hardly knew where to begin. This brand new world is just so different than others I've seen.

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Mountains rising for Opportunity

Posted by Emily Lakdawalla on 2011/07/31 10:11 CDT

The views from Opportunity of Endeavour's near and distant rim peaks are getting ever more vertical as Opportunity approaches Cape York.

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Pretty movie: Everything in the Saturn system is in motion!

Posted by Emily Lakdawalla on 2011/07/26 06:28 CDT

A few weeks ago a producer for a public television space documentary asked me if I knew of any cool Cassini animations and my answer was, "Ooh, what a great excuse to have some fun digging around in the Cassini data archives." Here is the most fun animation I came up with in response to the request.

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Cassini animations: Rhea and Dione and Titan

Posted by Emily Lakdawalla on 2011/06/28 04:12 CDT

I've been mucking about in the Cassini data archives (as I often do when procrastinating) and unearthed a neat, if short, mutual event sequence of two crescent moons passing by each other.

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Amateur takes on the Dawn Vesta images

Posted by Emily Lakdawalla on 2011/06/24 10:12 CDT

I am pretty sure that the Dawn team put nearly every image they've taken of Vesta so far in the animation they released yesterday, which is awesome. It hasn't taken long for the amateur image processing community to pick that animation apart into its component frames and process the heck out of the individual images to produce some very fine looking images and animations.

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Cassini finally catches Helene

Posted by Emily Lakdawalla on 2011/06/20 04:41 CDT

Cassini has finally achieved gorgeous global imaging of Helene with a spectacular flyby on Saturday, in which they got Helene to pose prettily for the camera from beginning to end of the encounter. And what a wacky, wacky world Cassini has revealed Helene to be!!

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Nearly behind Saturn

Posted by Emily Lakdawalla on 2011/04/19 01:03 CDT

Some recent photos that Cassini took from a position nearly in Saturn's shadow caught my eye, and I made a quick color composite. What an amazing view this would be if you were riding on the spacecraft!

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Lots of great stuff in the latest Cassini data release

Posted by Emily Lakdawalla on 2011/04/13 04:56 CDT

I've got some lovely pictures from Saturn to show you! Every three months, the Cassini mission dumps gigabytes worth of precious Saturn data into the Planetary Data System, and the latest gift came on April 1. This particular pile of data, which was taken between April 1 and June 30, 2010, contains a lot of really terrific moon observations.

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