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Headshot of Emily Lakdawalla

Door 13 in the 2010 advent calendar

Posted by Emily Lakdawalla

13-12-2010 15:33 CST

Topics: Rosetta and Philae, pretty pictures, asteroids, asteroid 21 Lutetia

Time to open the thirteenth door in the advent calendar. Until the New Year, I'll be opening a door onto a different landscape from somewhere in the solar system. Where in the solar system are these parallel gouges?

Door 13


Door 13

A good guess for this image would have been Mars' moon Phobos, which is well known for its system of grooves. But it's actually asteroid 21 Lutetia, seen by Rosetta in a flyby earlier this year. I had planned to be at the American Geophysical Union meeting in San Francisco today, and had hoped to attend a few talks about the Rosetta flyby of Lutetia this afternoon. But sick kids prevented me from attending. I hope to see someone Tweeting those sessions at the meeting!

The Planetary Society Blog 2010 Advent Calendar

See other posts from December 2010


Or read more blog entries about: Rosetta and Philae, pretty pictures, asteroids, asteroid 21 Lutetia


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