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Archive

Archived posts are listed in reverse chronological order.


  • Jan. 30, 2009 | 08:51 PST | 16:51 UTC
    Dawn Journal: Just missing the bull's eye at Mars
    Here's our monthly checkup with the Dawn mission, contributed by Marc Rayman, the mission's Project System Engineer. Thanks Marc! --ESL by Dr. Marc D. Rayman Dear Dawncers, Dawn continues on course for its pas de deux with Mars on February 17.... More»
  • Jan. 28, 2009 | 13:13 PST | 21:13 UTC
    Spirit's not behaving normally -- sometimes
    EDIT: JPL has updated their original release with a correction: "CORRECTION: In paragraph 3--Early Tuesday, Spirit reported that it had followed the commands, and in fact had located the sun, but not in its expected location." Rather than try to... More»
  • Jan. 28, 2009 | 10:06 PST | 18:06 UTC
    Treasures from Mars' ancient history
    One of the things I do when contemplating a move or, really, any other major life change, is to go through my library and sell a bunch of books. It's a symbolic thing, an attempt to clear some of the clutter before I make whatever new start is... More»
  • Jan. 27, 2009 | 11:23 PST | 19:23 UTC
    ANSMET Blogs: Snow ends the season
    I've posted another week's worth of blogs from the intrepid band of explorers in the Antarctic. The bad news is that the season is ending. The good news is that they made their (self-imposed and arbitrary) goal of collecting more than 500... More»
  • Jan. 27, 2009 | 10:33 PST | 18:33 UTC
    Saturn and Tethys, in color
    Eye candy is a great way to start the day. I spotted the images necessary to make this mosaic on the new-and-improved Cassini raw images website last week but after struggling for a little while to assemble even a couple of them into a coherent... More»
  • Jan. 26, 2009 | 14:40 PST | 22:40 UTC
    Your friendly neighborhood asteroid
    Like a rhinoceros lumbering across the savannah with a few oxpeckers as passengers, Earth is accompanied in its orbit by several diminutive followers known as co-orbital asteroids. They share the same region of space as Earth does, orbiting the Sun... More»
  • Jan. 24, 2009 | 08:33 PST | 16:33 UTC
    365 Days of Astronomy Podcast: Five Years of Living Vicariously on Mars
    Next in The Planetary Society's 365 Days of Astronomy doubleheader is Planetary Society President Jim Bell, whose show, airing today, is on "Five Years of Living Vicariously on Mars." It's in honor, of course, of the fifth anniversary of the... More»
  • Jan. 23, 2009 | 15:45 PST | 23:45 UTC
    The sol 18 shoe dropped today
    Every morning as I eat breakfast I've been tuning in to Scott Maxwell's blog for my latest blast from Spirit's past. (As I've mentioned before, Scott is a rover driver who has just started up a blog that consists of his daily journals from five... More»
  • Jan. 23, 2009 | 08:17 PST | 16:17 UTC
    365 Days of Astronomy Podcast: Voyage Past the Sideways Planet
    In the first game of a Planetary Society doubleheader of contributions to the 365 Days of Astronomy Podcast, my latest show, airing today, looks back to Voyager 2's encounter with Uranus, which happened 23 years ago tomorrow, just four days before... More»
  • Jan. 22, 2009 | 11:46 PST | 19:46 UTC
    Please send me your questions for Planetary Radio Q and A
    In less than two weeks I'll be moving to a new house, so I am going to be frazzled and crazy and distracted and probably not quite as regular in my posting as usual. In an effort to reduce the work I'll have to do through next month, I would love to... More»