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Five close-approach images of Hartley 2 by Deep Impact, with commentary

Posted by Emily Lakdawalla on 2010/11/04 10:58 CDT

Here's the five close-approach images of Hartley 2 captured today, November 4, 2010, by the Deep Impact spacecraft, collected into one file. Boy, do these images reward close examination!

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Deep Impact movies of outbursts from Hartley 2

Posted by Emily Lakdawalla on 2010/11/01 10:38 CDT

Since comet Hartley 2 -- the target of Deep Impact's November 4 flyby -- is near its perihelion, it's no surprise that it's an active comet with lots of outbursts.

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A couple of tidbits from today's Deep Impact preview briefing

Posted by Emily Lakdawalla on 2010/10/26 03:01 CDT

Today was the press briefing that previewed the upcoming Deep Impact flyby of Hartley 2.

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Deep Impact approaching Hartley 2

Posted by Emily Lakdawalla on 2010/09/22 04:23 CDT

The Deep Impact spacecraft team has released a third image from their approach to comet Hartley 2, and for me, three images is an invitation to make an animation!

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The Voyager Mission Updates

Posted by Emily Lakdawalla on 2010/09/14 01:39 CDT

We take for granted now the ability to get detailed mission updates in a timely fashion via the Web. But How did people get their mission status before the Web?

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Early warning for close approaches of two house-sized asteroids

Posted by Emily Lakdawalla on 2010/09/08 01:31 CDT

Most of you have probably heard by now of two small asteroids, both in the neighborhood of 10 meters in diameter, recently discovered on trajectories that pass unusually close to Earth.

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The August 20, 2010 Jupiter fireball -- and the March 5, 1979 one

Posted by Emily Lakdawalla on 2010/08/24 11:36 CDT

Following up on the story I first posted on August 22, the Jupiter impact fireball first noticed by Japanese amateur astronomer Masayuki Tachikawa has been independently confirmed by two other Japanese astronomers.

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Yet another Jupiter impact!? August 20, seen from Japan

Posted by Emily Lakdawalla on 2010/08/22 05:03 CDT

This may be a very common event after all: another optical flash has been observed on Jupiter, again from an observer far east of the Greenwich meridian, though it was not Anthony Wesley (for once).

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2008 LC15, the first Trojan asteroid discovered in Neptune's L5 point

Posted by Emily Lakdawalla on 2010/08/13 10:52 CDT

Congratulations to Scott Sheppard and Chad Trujillo for identifying the first known L5 Trojan asteroid of Neptune!

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Animation: Mars Express rising above the north pole

Posted by Emily Lakdawalla on 2010/08/11 09:08 CDT

The "Mars Webcam" on Mars Express (otherwise known as the Visual Monitoring Camera or VMC) has just restarted sending images to Earth after a bit of a hiatus.

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Curiosity rolls!

Posted by Emily Lakdawalla on 2010/07/23 03:56 CDT

Enjoy my extremely low-tech animation of Curiosity's first "steps"! Six wheels rolling on Earth -- let's go for six wheels rolling on Mars!

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Watching the birth and death of moonlets in Saturn's F ring

Posted by Emily Lakdawalla on 2010/07/22 09:09 CDT

The Saturn system is always in motion, always changing. Saturn itself is a gas giant, with swirling storms, and like the other gas giants it has a host of moons flying around, perturbing each other's motions. And then there's the rings.

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Volcanism across the solar system: Io

Posted by Emily Lakdawalla on 2010/07/20 05:33 CDT

Three months ago, grandiosely, I announced that I was going to survey volcanism across the solar system, and I began the journey on Earth. Then I failed to follow up.

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Rosetta Lutetia flyby successful; approach images posted; high-res images yet to come

Posted by Emily Lakdawalla on 2010/07/10 01:47 CDT

All appears to be going very smoothly on Rosetta through, and after, its flyby today of asteroid (21) Lutetia.

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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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Awesome New Mars Flyovers

Posted by Ryan Anderson on 2010/01/28 03:35 CST

Check out these awesome flyovers of Mars, generated by Doug Ellison of UnmannedSpaceflight!

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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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