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Blog Archive


Intro Astronomy Class 5: Venus (continued) and Mars

Posted by Bruce Betts on 2014/03/06 10:49 CST

Continue exploring Venus and begin looking at Mars in this video of class 5 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

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Intro Astronomy Class 4: Eclipses, Mercury, Venus-Earth-Mars Atmospheres, Venus

Posted by Bruce Betts on 2014/02/28 01:30 CST

This video of class 4 of Bruce Betts' Introduction to Planetary Science and Astronomy class discusses eclipses, Mercury, Venus, and a comparison of the atmospheres of Venus, Earth, and Mars.

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Looking Backward: Curiosity gazes upon the setting Earth

Posted by Emily Lakdawalla on 2014/02/05 11:58 CST | 10 comments

A few days ago, Curiosity looked westward after sunset and photographed Earth setting toward the mountainous rim of Gale crater.

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Do you want to learn more about the Universe?

Posted by Matthew Francis on 2014/01/15 12:08 CST

CosmoAcademy — a project from the CosmoQuest educational and citizen-science group — is offering three new online classes: Introduction to Dark Matter, Introduction to Astronomy via Color Imaging, and Life Beyond Earth: Introduction to Astrobiology.

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Multiple views of comet ISON from solar-observing spacecraft

Posted by Emily Lakdawalla on 2013/12/02 07:50 CST | 6 comments

When comet ISON passed through perihelion last week, solar observing spacecraft had a ringside view. Here are several animations of ISON's perilous passage from the SOHO and two STEREO spacecraft.

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The Mariner Mars Globe

Posted by Don Davis on 2013/11/29 12:04 CST | 3 comments

In 1971 I was being trained to work with the airbrush by the map artists at the U.S. Geological Survey's Branch of Astrogeologic Studies in Flagstaff. However, the project I ended up spending about a quarter of a man-year on was a hand-painted map globe of Mars.

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On space kindness and the Chelyabinsk meteor

Posted by Vitaliy Egorov on 2013/10/04 07:04 CDT | 1 comments

Through an act of kindness, we now have images of the Chelyabinsk meteor trail from Russia's Elektro-L satellite.

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Super cool Phobos and Deimos animations from Mars Express

Posted by Emily Lakdawalla on 2013/10/03 02:17 CDT

I've been delving in to the Mars Express image archive this week, checking out its images of Phobos, and found a couple of really cool time-series of images to assemble into animations.

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Two new ways to browse Vesta: 2. Vesta Image data browser

Posted by Emily Lakdawalla on 2013/09/16 10:57 CDT

A few weeks ago I received an email pointing me to a really cool new map-based browser to Dawn's Vesta image data.

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Producing global views of Vesta from archival data

Posted by Björn Jónsson on 2013/08/21 12:18 CDT | 3 comments

Björn Jónsson produces beautiful color and 3D global mosaics of Vesta from Dawn's archival data.

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Want to learn how to process space images? Take my Cosmoquest Academy class!

Posted by Emily Lakdawalla on 2013/08/09 05:40 CDT | 2 comments

The Planetary Society and Cosmoquest have teamed up to offer a short course in space image processing, and I'll be teaching! The course comprises four one-hour sessions from October 14 to 23.

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One of my favorite image processing tricks: colorizing images

Posted by Emily Lakdawalla on 2013/04/23 02:11 CDT | 2 comments

An easy image processing trick -- using lower-resolution color data to colorize a black-and-white photo -- is relied upon by many space missions to keep data volumes low. Here's how to do it.

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Russia's Mars 3 lander maybe found by Russian amateurs

Posted by Emily Lakdawalla on 2013/04/12 01:22 CDT | 4 comments

Виталий Егоров (Vitaliy Egorov) is a Russian space enthusiast who enlisted help of fellow enthusiasts to search for -- and maybe find -- the Russian Mars 3 hardware on the Martian surface. Here he explains how he did it.

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Browse Curiosity's data in the Analyst's notebook

Posted by Emily Lakdawalla on 2013/03/05 01:29 CST

Last week the Curiosity mission made its first data delivery to the Planetary Data System. The bad news: none of the science camera image data is there yet. The good news: there are lots and lots of other goodies to explore.

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Galileo's images of Gaspra

Posted by Emily Lakdawalla on 2013/03/01 06:43 CST | 2 comments

Last week I trawled the archives to find all of Galileo's images of asteroid Ida; this week, I turned to Gaspra.

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Browsing Landsat data is a lot easier than I thought it was

Posted by Emily Lakdawalla on 2013/02/08 05:05 CST | 2 comments

With the Landsat Data Continuity Mission scheduled to launch on Monday, there's been a lot of Tweeting about Landsat, and through one such Tweet I learned about a resource that I hadn't known existed before: the LandsatLook Viewer. This is a graphical interface to more than a decade worth of Landsat data, a tremendous resource for anyone interested in Earth's changing surface, natural or manmade.

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Day Hikes in the Labyrinth of Night

Posted by Bill Dunford on 2013/02/04 10:02 CST

Noctis Labyrinthus on Mars is an amazing place for an imagined day hike, courtesy of images from Mars Express.

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Enceladus: A problem of contrast

Posted by Emily Lakdawalla on 2013/01/30 07:00 CST | 6 comments

Time for my quarterly foray into the Cassini archival science data! The very first image I downloaded from the January 1, 2013 data release presented an interesting challenge to my image processing skill. I'll show you the pretty picture of Enceladus and then explain how I processed it.

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Who is the photographer behind Mars rover photos? Answer from Mark Lemmon

Posted by Mark Lemmon on 2012/12/21 11:10 CST | 2 comments

A Mars imaging scientist answers the question: who is the "photographer" behind images returned from Mars?

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Images from the long-awaited Dawn Vesta data set

Posted by Daniel Macháček on 2012/11/29 11:55 CST | 4 comments

A few days ago, the Dawn mission finally published their archival data. During the year of delay I often looked with anticipation to the Planetary Data System to check whether or not images were there, and I am delighted that they are finally available. Was the wait worth it? Definitely!

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