What do you think of this shot of lenticular clouds (wave clouds) taken in February 2007?
http://epod.usra.edu/archive/epodviewer.php3?oid=366912
The photo is archived at the Earth Science Picture of the Day website:
And don’t miss this picture. It’s even more otherworldly than the first.
http://antwrp.gsfc.nasa.gov/apod/ap030326.html
More: