Beyond wrote: i don't think permission is needed.
Thanks, Beyond, for your thoughts! I had some additional thoughts on this myself even before your reply post. I seems to me that this woman uploaded her content to TwitPic and therefore she owns copyright. There is some discussion on the web as to whether TwitPic owns copyright of most images posted to TwitPic, but I think that TwitPic has recently acknowledged that copyright reverts to the original image owner. Even though this image is all over the web and shown on many pages and blogs, I was reluctant to post it on APOD without the copyright owners permission. I guess the reason is that, as my mother said, just because others jump off a bridge doesn't mean that I should.
If there was a way to imbed the TwitPic image on an APOD page, like we do for YouTube and Vimeo, that might have worked. But I couldn't find a way to do that either.
The idea of posting a image permissions request as a comment on her blog is pretty good, but somehow it seemed intrusive. Also, I was hoping that if CBS could located her and get permission, it might not be that hard. But I was wrong (again)!
I am thinking of starting an "APOD Image Chasers" group of people who would subscribe to an original "APOD Image Chasers" post and then help out APOD by trying to get explicit permissions for cool images found around the web. That might have helped here. I do note that I received several helpful emails from people, which were good but it seemed that people were duplicating each others efforts, perhaps needlessly.