Alien Riposte
Distant future. The Earth is in the war with alien civilizations for the repartition of the Universe. All the forces have been directed onto the occupation of a strategically important and belligerent planet. But the enemy have done a manoeuvre and split up. ... Your ship is the last one left on the Earth, and you're the only one to stop them. ... Thousands of ships and controllable meteoroids are pouncing at the Earth like a bolt from the blue. ... Your main goal in the game Alien Riposte is to destroy as many enemies as possible before they reach the Earth and you must stay alive.
http://fungamesgalaxy.com/files/alienripostesetup.exe - 11Mb - Download - Screenshot

Earth 3D Space Tour
This unique 3D-accelerated (OpenGL) screensaver features true photo-realistic and astronomically accurate 3D animation of the Earth viewed from Space. It will catch your eyes by beautiful scenes of cosmic sunrises and sunsets, amaze you by stunning real-looking atmosphere effects, oceanic... Each frame of this endless animation is comparable with best NASA photos, so this screensaver can also be used for educational purposes. ... Arbitrary camera flyby trajectory allow to admire the Planet in different perspectives and views.
http://www.fpsoftlab.com/earth3d.exe - 2Mb - Download - Screenshot

3D Galaxy Screensaver
3D Galaxy Screensaver, as you've already guessed from the name, is a three dimensional screensaver picturing a galaxy. The screensaver continues the space series of screensavers from www. deaddybear. com - 3D Earth, 3D Earth: Armageddon Edition, and 3D Space Gladiators. ... No need to look through a telescope, fly to a space station or do anything else. ... Pretty cool, isn't it? ... Grab your copy now. ... Just think about it - a galaxy on your computer monitor! ... 3D Galaxy Screensaver was created with the help of astronomers and NASA specialists to give you more or less realistic...
http://www.deaddybear.com/files/3dgalaxy.exe - 1Mb - Download - Screenshot

Back To Earth 2
"Back To Earth 2" is a space arcade scrolling shooter, far superior to other games in this genre. The game is split into 7 episodes, each made of 4 levels. Although there is no clear division between the levels, the final level of each episode ends with a battle with a new alien boss. ... "Back To Earth2" features no offensive or questionable content and is warmly greeted by all kinds of gamers.
http://www.alawar.com/submit/BackToEarth2.exe - 10Mb - Download - Screenshot

Bug Zappers
Bug Zappers is a game where giant alien bugs are trying to take over the earth. They are flying down to burrow into the ground so that they can lay eggs and create colonies to overcome the humans. Using their high-tech bug zapper helmets, two heroes must try to electrocute the giant insects as... If a bug burrows into the ground, then the game is over. ... Only the yellow character can zap the yellow bugs, and only the purple character can zap the purple bugs. ... You must control both characters at once to zap the bugs as they come down from the top of the screen.
http://gpcecil.home.mchsi.com/downloads/Bug_Zappers.zip - 237Kb - Download - Screenshot

Moon Glimmer
Does astronomy intrigued you? Do you often look into the sky at night and marvel at the wonderous reaches of space? The moon is the closest celestial object to us. But did you know that the same side of the moon always faces the earth no matter where the moon is in the sky or what phase the moon... The sun could be shining on it, but we cannot see it because that side of the moon is never in view from earth. ... The back side of the moon is never seen from the earth. ... If you are an amateur astronomer, you will find Moon Glimmer to be a useful tool.
http://www.directlogic.com/download/mgsetup.exe - 1Mb - Download - Screenshot

Almanac
Almanac gives you the capability to determine the times of rising, setting, and meridian transit for the sun, the moon, and the planets. It also enables you to calculate the beginning and ending of astronomical, nautical, and civil twilight. The results of the calculations are formatted and... Lunar parallax changes the perceived altitude of the moon because the observer is not at the center of the earth. ... The formulae used in Almanac assume an ideal horizon where the intersection of the sky with the apparent plane of the earth's surface at the observer is the horizon.
http://home.att.net/~srschmitt/ALMNAC10.zip - 587Kb - 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. ... 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. ... How about having the opportunity to watch this unique planet any time you like?
http://www.space-screensavers.com/files/planeturanus3d.exe - 2Mb - Download - Screenshot

From Space to Earth - Europe Screen Saver
Protect your monitor with satellite-eye views of different parts of Europe. See pictures of Spain, England, France, Germany, Italy and more. This 32-bit screen-saver engine rotates photos of different locations of Europe as seen on clear days from the earth's orbit. ... Customize the program to your liking with several appearance and behavior options, all accessed from a clean, tabbed window. ... This screen saver contains 50 photos, each of which also may be used as wallpaper. ... Plus, each of the photos can be displayed as your desktop wallpaper.
http://screensavers.sytes.net/screensavers/europe_eval.exe - 2Mb - Download - Screenshot

Earth Explorer
This educational program brings a plethora of geographic information right to your desktop. After you launch Earth Explorer, you'll be greeted by a 3D rendition of the Earth spinning in space. To the right of the globe sits a table of information on countries, cities, and islands. ... 3D global view with 50m resolution satellite imagery and shaded relif DEM (digital elevation model) imagery convered entire earth; 2. ... Earth Explorer also can be configured to show different views, such as those outlining rivers, major cities, and recent earthquakes.
http://www.motherplanet.com/download/InstallEarthExplorer.exe - 8Mb - Download - Screenshot