presentation platform from drop.io. "has dead simple rich web-presentation functionality. no registration, no downloads, no installs. You can upload your presentation files (documents, pictures, video, audio, and more) and be giving your demo or walk through in seconds. "
This is a place for free public domain photos and desktop wallpapers. Large collection of High Resolution photos and wallpapers, Thousands of high quality public domain pictures, easy to search: animals, architecture, art, backgrounds, birds, electronics, flowers, food, etc.
As the owner I have explicitly placed all the photos in the public domain.
Once you sign up for the site and pick one of its membership packages -- $14.95 for 100 minutes on a telescope or $49.95 for an unlimited amount of time for one year -- you'll have the option to explore space. You'll take hold of a telescope, zoom in on, well, anything you see, and Otto, the site's mascot will tell you what you're looking at. You can also take pictures of whatever you've seen.
Non-Messier Objects Indexes is exactly that. Non-Messier objects are those astronomical "objects" that were not originally included in French astronomer Charles Messier's Catalog of Nebulae and Star Clusters. The site is an index of star clusters, galaxies, and nebulae thousands of light years away. You'll find pictures of the objects, descriptions, and all kinds of scientific data. The Non-Messier Objects Indexes is definitely for the space expert.
Space.com provides some of the best information on the Web about the universe. You can see the latest space news. You can even monitor space missions. The site has a "SpaceViews" section offering up pictures and videos for you to see what's out there.