Just discovered the recently launched NASA Images web site. From this article that talks about the launch: The launch is the first step in a five-year partnership that will add millions of images and thousands of hours of video and audio content, with enhanced search and viewing capabilities and new user features. How cool is that?!?! The design of the site looks like it should be easy to get around. I've downloaded a couple and they are decent resolution. My hope is that higher resolution becomes available as well.