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Planetary Society Advent Calendar for December 31: Uranus

Emily Lakdawalla • December 31, 2009

Did you think I was going to skip Uranus? How could I?

Mars Exploration Rovers Update: Spirit Perseveres Struggles, Opportunity Digs in at Marquette Island -- And We Look Back on 2009

A.J.S. Rayl • December 31, 2009

The Mars Exploration Rovers quietly wrapped up 2009 this month: Spirit continued to valiantly spin its wheels in an attempt to get out of its embedded location on the west side of Home Plate in Gusev Crater; and Opportunity continued its investigation of Marquette Island, perhaps the oldest Martian rock it's found to date at Meridiani Planum.

Worsening outlook for Spirit

Emily Lakdawalla • December 31, 2009

I just got a press release from the Jet Propulsion Laboratory that made my heart sink; the extrication effort for Spirit is not going at all well. I did not want to keep sounding a knell of bad news. But once in a while, I do have to report bad news.

2009: The Year in Pictures

Emily Lakdawalla • December 31, 2009

At last, I've posted my annual Year in Pictures feature. Go check it out!

NASA selects three new missions for New Frontiers studies

Bruce Betts • December 30, 2009

NASA has selected three finalists for the next New Frontiers mission: a Venus lander, a near Earth asteroid sample return, and a lunar Aitken basin sample return mission.

Planetary Society Advent Calendar for December 30: Tempel 1

Emily Lakdawalla • December 30, 2009

Looking over the list of planets, moons, and smaller bodies I posted so far, I realized I didn't have an image of a comet yet.

Planetary Society Advent Calendar for December 29: Rhea

Emily Lakdawalla • December 29, 2009

Rhea? You might be asking. Rhea? When Saturn has so many more interesting moons? Hear me out.

Planetary Society Advent Calendar for December 28: Ariel

Emily Lakdawalla • December 28, 2009

Here's yet another of the moons of Uranus for you: Ariel, a near-twin in diameter to Umbriel, but apparently with more interesting geology.

Planetary Society Advent Calendar for December 27: Prometheus (hot off the presses!)

Emily Lakdawalla • December 27, 2009

This one is fresh from the spacecraft! The data were captured yesterday, December 26, by Cassini during its best yet imaging encounter with the small ringmoon Prometheus, and showed up on the Cassini raw images website today.

Planetary Society Advent Calendar for December 26: Titan

Emily Lakdawalla • December 26, 2009

Titan is a weird alternate-universe Earth, surprisingly similar to our own planet in some ways, but not at all like our planet in others.

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