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. ... 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

Only Near Space Travel
Start virtual travel around Near Space with our 3d model of Solar System. Look at hot stone called Mercury and cloudy Venus, blue Earth and red Mars, its channels are fantastic and snow hats are realy exist. Jupiter Red spot is an one secret of largest planet. ... Uran, Neptune, Pluto, Satellites and Asteroids are in our screensaver. ... It's amazing. ... Look at rings of Saturn.
http://www.onlyscreensavers.com/files/solarsystem.exe - 6Mb - 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

Galaxy 3D Space Tour
If you look up into the sky on a clear dark night, far from the intrusive glow of streetlights, you will see a faint band of starlight running across the heavens - "Milky Way". It is actually the disk of our own galaxy - seen from our perspective (within the disk). ... But what if we leave our Solar System and the Galaxy on fantastic space ship and look back to our "Space Island"? ... This screensaver is an attempt to simulate this fantastic space scene as close to reality as possible using modern 3D technologies.
http://www.fpsoftlab.com/galaxy3d.exe - 1Mb - Download - Screenshot

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

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 Quest
Are we alone? It seems rather unlikely. In the last ten years astronomers have discovered over 150 planets beyond our own solar system. Soon we will know how many of them contain life. And one day there will be more charted planets than you can count. ... Join us as we marvel at the infinity of creation - using the awesome power of your PC to create an infinity of worlds to enjoy and to marvel at, in stunning 3D. ... A 3D Wonders creation. ... Flexible music playback options are included, as well as our theme music - an original composition created by Stuart Bassett.
http://www.3dwonders.com/planetquest/planetquestsetup.exe - 1Mb - Download - Screenshot

Orbit Xplorer
Educational orbit and gravitation simulator for high school, college and beginning university physics and astronomy. Input mass, radius, coordinates and velocity components of 2 to 10 bodies manually or by dragging and dropping predefined bodies. Then watch how the orbits evolve under the mutual... Simulations include elliptical satellite orbits, Kepler's laws, double star, geocentric and heliocentric world view, Lagrange points, gravity assist, Hohmann orbit, extrasolar planet, inner solar system.
http://www.ottisoft.com/orbitx20.exe - 3Mb - Download - Screenshot