Awesome Deep Space Screen Saver
A photo slideshow screen saver with beautiful photos of deep space objects by the Hubble Telescope. All images are scaled for 800x600 (a 1024x768 version is also available, see our web site). Other screen saver features include transition effects, black and white mode, password use, and extract... This Lite version with 5 photos is free, the Gold Edition has 42 photos and may be purchased at Awesome-Screens.
http://www.awesome-screens.com/zip/deep_space.zip - 1Mb - Download - Screenshot

365 Space Shuttle Screen Saver
Join NASA astronauts as they carry out their mission ABOARD THE SPACE SHUTTLE. This space screensaver is loaded with over ASTOUNDING IMAGES images featuring lift offs, space walks, satellite deployments, rendezvous with MIR and the International Space Station, Hubble Space Telescope servicing,... com screen savers come with STICKY NOTE support so you can leave an on-screen message while you are away from your computer and WALLPAPER support so you can use any screensaver image as your desktop background.
http://365multimedia.com/cart/download~asp-shareware.org~sss.exe - 8Mb - Download - Screenshot

Kaleid-O-Space
Kaleid-O-Space is a mesmerizing animated screen saver that brings you all the fascination and beauty of a real kaleidoscope, right on your PC! But, Kaleid-O-Space is much more than a screen saver. Think of it as an interactive toy for your mind and soul. ... Kaleid-O-Space begins with a panoramic view of planets and a galaxy in space. ... 1 it can also manage wallpapers captured from the screen saver with a one-step button. ... The screensaver can be used interactively, or as a traditional screen saver that terminates when the mouse is moved.
http://www.kaleid-o-space.com/downloads/KSS_v2_Setup.exe - 9Mb - Download - Screenshot

StarStrider screen saver
Turn the StarStrider 3D planetarium into a screen saver! The StarStrider screen saver allows you to use FMJ-Software's StarStrider planetarium software as the pinnacle of 'space travel screen savers'. View the planets and moons of our solar system! View hundreds of thousands of stars! ... x (Shareware available from Simtel. ... zip) + DirectX 8 or later. ... Requires FMJ-Software's StarStrider v2. ... Net as stars25. ... View spectacular galaxies, clusters & nebulae! ... All in photo-realistic 3D - there's really nothing else quite like it!
http://www.starstrider.com/download/starsv20.zip - 222Kb - Download - Screenshot

365 Hubble Telescope Screen Saver
Launch yourself into orbit and discover the WONDERS OF SPACE through the eyes of the world-famous Hubble Space Telescope. This space screensaver includes over forty INCREDIBLY DETAILED IMAGES of spinning galaxies, colorful nebulae, distant supernova remnants, solar system planets, and other... com screen savers come with STICKY NOTE support so you can leave an on-screen message while you are away from your computer and WALLPAPER support so you can use any screensaver image as your desktop background.
http://365multimedia.com/cart/download~asp-shareware~hts.exe - 7Mb - Download - Screenshot

Federation Screen Saver
Federation Screen Saver is a Freeware Mac OS X screen saver featuring a 360 degree rotating logo of the United Federation of Planets from Star Trek The Next Generation and Star Trek Deep Space Nine.
http://homepage.mac.com/niteowl69/...c/Federation%20Screen%20Saver.zip - 4Mb - Download - Screenshot

All Space
This screensaver shows a selection of the images available in our outer Space Series screensavers: American Space Shuttle, Deep Space, Solar System, and Spacecraft. These images include nebulae, galaxies, planets, moons, comets, asteroids, interplanetary probes, space stations, satellites, and... This screen saver contains 63 amazing images.
http://www.soft2d.com/graphics_&_m...eensavers/files/allspa30trial.exe - 2Mb - Download - Screenshot

Slide Show to Go
Create amazing sight and sound presentations! Slide Show to Go makes it easy to create slide shows and screen savers, with over 160 transition effects, captions, scheduled slides, and WAV, WMA, MIDI, or MP3 sound. Then burn a video disc for DVD players, package to run on another PC or as a... Unique features include slide cropping, "spacers," and slide scheduling. ... Slide Show to Go can also prepare your show to work with the Anfy (R) applets for Java (R), so you can put your presentation on the Internet.
http://www.nightwatchsoftware.com/sstg/sstgin.exe - 6Mb - Download - Screenshot

Awesome Geology from Space Screen Saver
A photo slideshow screen saver with beautiful NASA/JPL radar images of geological formations around the world, including volcanoes, rivers, mountains, and more. The false-color palettes used in these images make them beautiful to look at as well as interesting to study. ... Other screen saver features include transition effects, black and white mode, password use, and extract photos as wallpaper, including built-in wallpaper cycling every hour or every day. ... com. ... This 5-photo Lite version is free, the Gold Edition has 42 photos and may be purchased at Awesome-Screens.
http://www.awesome-screens.com/zip/geology_from_space.zip - 2Mb - Download - Screenshot

Sputnik Screen Saver
A simple screen saver with a Sputnik cruising space. Not in orbit of Earth (as a real satellite would be), but who cares?
http://www.desktop-backgrounds.net/download/sputnik.exe - 629Kb - Download - Screenshot