Though Space Worms Would Be Cool

No. Not bacteria. Not a herd of space worms. This a field of sand dunes in Proctor Crater on Mars. The dark bits are the dunes, blowing over the lighter rock beneath. Each one is about a football field wide.

For more cool, geeky details, go to the Astronomy Picture of the Day.

And have a pleasant Thanksgiving. If you are reading this, you must have access to a computer. And electricity. Alotta people don't. So be thankful, dammit.