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Stories, updates, insights, and original analysis from The Planetary Society.

Book Review: Atlas of the Galilean Satellites, by Paul Schenk

Not many subjects remain for which it is possible to assemble everything that we know about it in one book. Even for those subjects for which our knowledge is limited, knowledge seems always to be expanding exponentially. This is not true, however, for the Galilean satellites of Jupiter.

Is Europa's ice thin or thick? At chaos terrain, it's both!

Among Europa scientists there are two warring factions: the thick-icers and the thin-icers. The question is how thick is the ice shell that overlies Europa's subsurface ocean (the existence of which pretty much everyone agrees on).

Book Review: A More Perfect Heaven, by Dava Sobel

As with her previous two books Longitude and Galileo's Daughter, Dava Sobel draws heavily on primary sources for her latest book, A More Perfect Heaven: How Copernicus Revolutionized the Cosmos.

Phobos-Grunt status, launch plus six days

I said I wasn't going to post again unless the spacecraft talked to us, but I changed my mind because finally there were official comments today about the status of the mission from Roskosmos head Vladimir Popovkin.

How to move a shuttle across Los Angeles

Ever since the space shuttle Endeavour was awarded to the California Science Center I've been curious about the question of how they will ever get a shuttle from Los Angeles International Airport across more than 10 miles of densely developed city land in the United States to Endeavour's eventual home in Exposition Park.

A little fun with Deep Impact deep-sky data

Last week, the team put all of the data from Deep Impact's deep-sky imaging session online, and challenged visitors to see what they could make from it. I made some photos of M51, but there were some challenges.

Phobos-Grunt status, two days after launch

When I last left Phobos-Grunt, Roscosmos had not yet commented on the results of a planned attempt to communicate with the wayward spacecraft at 19:00 UT on November 9.

Phobos-Grunt, the morning after

I repeatedly rewrote yesterday's post on the problem suffered by Phobos-Grunt after its apparently perfect Zenit launch and thought it was time to begin fresh.

Phobos-Grunt and Yinghuo-1 poised for liftoff

Russia's Phobos-Grunt sample return spacecraft, carrying the Planetary Society's Phobos LIFE experiment, plus China's Yinghuo-1 Mars minisatellite, are poised for launch at Baikonur! The launch window opens in less than six hours, at 20:16 UTC.

Live feeds on asteroid 2005 YU55 as it passes Earth

Unless you've been living under a rock you've probably heard that there is a relatively large (400-meter) asteroid passing closer to Earth than the orbit of the Moon today -- in just a few minutes, as a matter of fact.

Print publications galore!

November has already been a very good month for me in the print publication realm. I've had published not one, but two, feature articles on Curiosity, the Mars Science Laboratory rover.

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