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Blogs

Blog Archive

 

Sunset and eclipse on Mars

Posted by Emily Lakdawalla on 2011/01/05 11:38 CST

These two movies were posted to the JPL website a couple of weeks ago, and they are just amazing.

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How Mars Express' orbit shifts with time

Posted by Emily Lakdawalla on 2011/01/04 11:02 CST

While I was writing yesterday's blog entry on Mars Express' Phobos flybys I realized that I didn't understand Mars Express' orbit very well. So I sent an inquiry to the Mars Express blog, which they answered in a blog entry today.

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IKAROS team proceeds with final stage of sail deployment!

Posted by Emily Lakdawalla on 2010/06/08 11:32 CDT

Just a brief update on IKAROS: According to their blog, JAXA has decided to proceed with the final stage of IKAROS' sail deployment.

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Quaoar: A rock in the Kuiper Belt

Posted by Emily Lakdawalla on 2010/04/01 12:48 CDT

The paper I'm writing about today, "Quaoar: a Rock in the Kuiper Belt," is based upon seven sets of Hubble Space Telescope WFPC2 observations of Quaoar and its recently-named moon, Weywot.

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Mars Express animation of Phobos' shadow transiting Mars

Posted by Emily Lakdawalla on 2010/02/02 12:08 CST

For the first time ever, Mars Express' Visual Monitoring Camera has imaged the shadow of Mars' moon Phobos crossing the surface of Mars.

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Odyssey's going to start listening for Phoenix

Posted by Emily Lakdawalla on 2010/01/11 05:26 CST

Odyssey's going to start listening for Phoenix

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Asteroid 2867 Steins

Posted by Emily Lakdawalla on 2010/01/11 02:01 CST

This description of asteroid 2867 Steins is based upon an article published in the January 8, 2010 issue of Science by H. Uwe Keller and numerous coauthors and on a related press release.

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Spirit's still "extricating"

Posted by Emily Lakdawalla on 2010/01/08 01:08 CST

It's been two months, now, that extrication efforts have been going on. It's discouraging that the Mars Exploration Rover Spirit isn't out of the trap.

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400 Years of the Galilean Satellites

Posted by Emily Lakdawalla on 2010/01/07 03:34 CST

It was 400 years ago today that Galileo discovered smaller planets attending the planet Jupiter.

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Cassini VIMS sees the long-awaited glint off a Titan lake

Posted by Emily Lakdawalla on 2009/12/17 04:28 CST

The Cassini mission announced today the first observation of a specular reflection off of a lake on Titan. A specular reflection is a mirror-like flash, and you only get one when you have a mirror-like surface -- very, very smooth.

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A teeny weeny bit of movement in Spirit's right front wheel

Posted by Emily Lakdawalla on 2009/12/14 01:12 CST

The ever-vigilant Doug Ellison just posted this animation, which really actually does show a teeny tiny bit of motion in the right front wheel. If you don't notice any motion, look closer.

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Awesome Mars Express view of Phobos and Deimos together

Posted by Emily Lakdawalla on 2009/12/11 11:24 CST

My inbox was exploding this morning with messages about a tremendously cool animation released this morning by ESA's Mars Express team. It shows Phobos crossing Deimos, in what's known as a "mutual event."

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Encouraging motion on Spirit

Posted by Emily Lakdawalla on 2009/11/19 04:54 CST

It really looks like the second attempt at driving Spirit out of the trap has had the hoped-for result: some forward progress (maybe about a centimeter), and no evidence for further downward sinking.

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Opportunity's poking at Marquette Island; Cassini's catching dancing moons

Posted by Emily Lakdawalla on 2009/11/18 04:58 CST

Since tomorrow's class is going to be on playing with raw images from the rovers and Cassini, I've been playing with recent raw images from the rovers and Cassini! I just thought I'd share a couple of the fun items I've been working with.

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Results of the first "Free Spirit" extrication drive, sol 2088: not much, as expected

Posted by Emily Lakdawalla on 2009/11/17 03:20 CST

Even though all of us rover fans know that Spirit is really, really stuck, I think I'm not the only one who was secretly hoping that today's images downlinked from Spirit would show that the rover had magically popped out of the ground overnight. Of course, she didn't.

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Beautiful 3D animation of Spirit's environs in Gusev Crater

Posted by Emily Lakdawalla on 2009/09/23 08:14 CDT

Doug Ellison has done it again: he's created a spectacular overflight of Gusev crater based upon digital elevation models of the terrain produced by the United States Geological Survey from HiRISE data.

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Opportunity's highway, and a tour of Block Island

Posted by Emily Lakdawalla on 2009/09/15 12:35 CDT

Just a cool image to start the morning: after a 70-meter drive yesterday, Opportunity's following not one but two sets of its own tracks.

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A sunset into the dust

Posted by Emily Lakdawalla on 2009/08/24 12:37 CDT

While Spirit has been stuck at Troy, it's been taking numerous opportunities to capture photos with dramatic twilight lighting. On sol 2,002 (three sols ago, or August 21), it gazed toward the setting Sun, snapping the shutter roughly once a minute.

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