3D Alien Clock screensaver
For a long time we used to think that Clock is just a time-measuring tool. At the same time ingenious Alien scientists have been deeply exploring the time phenomenon and finally created Interstellar Time Factory aimed to produce the time of the highest quality. ... The Time Factory was launched into space and on June 23, 2006 reached our Solar system. ... It does not really matter what we do or where we go if we are cheerful we do not waste our time. ... All we need is just to live every moment to the fullest extent.
http://7art-screensavers.com/files/AlienClock3Dinst.exe - 9Mb - Download - Screenshot

Coin Planets
Coin Planets is an addictive platform game that combines arcade action, excellent 3D graphics, animation and exciting gameplay. Colin the Coin is back in his latest adventure. Colins arch-enemy Flash the Cash is up to his old tricks again and has stolen a large amount of priceless coins and... Aswell as the massive amount of main levels to complete you must also escape or defeat the 9 End-of-Level Bosses that stand in your way. ... Run, jump, bounce, teleport and surf your way through the 45 exciting levels featuring 9 different planets.
http://addictive247.fileburst.com/cplanetsdemo.exe - 8Mb - 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. ... Net as stars25. ... Requires FMJ-Software's StarStrider v2. ... zip) + DirectX 8 or later. ... 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

Planet War
"Once more the aliens are trying to invade our solar system. We have to defend ourselves and you make part of the special troops. You must shoot down all the enemy ships. Thousands of Free Online Games, Free Flash Games, Free Games and Free Addicting Games at Factorygames - factorygames. ... Play all of our free flash games completely free online right now! ... Play your favorite free flash games in our flash arcade games. ... com.
http://www.factorygames.com/free_d...space/03planet_war/planet_war.zip - 436Kb - Download - Screenshot

Planet Pluto 3D Screensaver
Far far away, at the very edge of the Solar System lies Pluto, the ninth planet from the Sun. It is not only much smaller and less massive than every other planet, it is also smaller and less massive than seven moons of other planets. It has a highly eccentric orbit which takes it inside the... Pluto's atmosphere appears to extend out to include Charon, which suggests that they may share an atmosphere. ... There are many other interesting and controversial facts about this planet that you can learn if you download this screensaver.
http://www.space-screensavers.com/files/planetpluto3d.exe - 3Mb - Download - Screenshot

Planet Uranus 3D Screensaver
Uranus is unique in our solar system because it is tilted 98 degrees. When viewed from Earth, it appears to rotate on its side! At different times throughout its orbit, we can actually view one of the planet's poles head-on. The atmosphere is composed of hydrogen, helium, and methane. ... How about having the opportunity to watch this unique planet any time you like? ... All you need is this terrific Planet Uranus 3D Screensaver on your desktop! ... Uranus is the farthest planet from Earth that can be seen with the unaided eye but of course this can only happen on a clear, dark night.
http://www.space-screensavers.com/files/planeturanus3d.exe - 2Mb - Download - Screenshot

Grand Tour 3D
The Distant Suns-Grand Tour 3D screen saver is a high-speed full motion solar-system simulator using OpenGL technology and accelerated graphics. The positions and rotations of each of the planets and their moons are accurate to the current date and time! ... The constantly changing scenes assure and infinite variety of interplanetary vistas. ... Watch the moons of Saturn in their daily dance around the majestic ringed world or the Earth rotate under your feet. ... (As a result, this can also serve as a real-time clock.
ftp://ftp.monkeybyte.com/WinOS/ds_ss_install.EXE - 2Mb - Download - Screenshot

MaterialWorlds Simulations
Live interactive physics simulations let you explore the Solar System (orbits, seasons, gravity, tides, satellites and comets), play snooker (on a full size table) and experiment with Laws of Motion simulations (free worksheets provided for pendulum, Newtons cradle, terminal velocity and... With real-time visualisation of forces and velocities (as arrows on each object as they interact or are pulled around with the mouse) and scrolling graphs recording what happens, MaterialWorlds gives a real feel for how the physical world works.
http://www.materialworlds.com/download/mwinst.exe - 4Mb - Download - Screenshot

StarStrider
StarStrider is a software planetarium that utilizes the latest in 3D-technology in order to show you not only the planets and satellites of our solar system, but also the more than 100 000 stars from the Hipparcos catalogue, all in real-time 3D. You'll also find galaxies, nebulae, supernova... Made by an astronomer and a software engineer, StarStrider combines photo realism and scientific accuracy with plain fun and the esthetic enjoyment of beauty of the wonders of the universe! ... Free add-ons include an larger planet textures, and a huge database of 2 *million* stars!
http://www.starstrider.com/download/stars28.zip - 13Mb - Download - Screenshot