Adastra FREESTAR
A complete and accessible astronomy experience is in store -- with real-time sky, comprehensive reports, arcsecond accuracy, and exciting features such as animation and live tracking. Adastra's powerful search encompasses planets, comets, asteroids, DSOs, and a multitude of stars, making... Adastra's point-and-click Solar Guide will take you on a tour of our Solar System interactively linking to both Sky and Picture windows. ... Advance, retard, or animate the simulation's clock by years, months, days, and minutes of sidereal or solar time, tracking any selected object through the sky in...
http://www.skynow.com/coeli/software/adastra.zip - 4Mb - Download - Screenshot

Newton's Aquarium
Newton's Aquarium is a solar system construction set that allows students to create and explore situations involving any number of stars, planets, moons and asteroids. This software takes an interactive, visual approach to physics. Newton's Aquarium will help students develop an intuition for... By creating and exploring their own solar systems with Newton's Aquarium, students encounter the core concepts in classical physics. ... Online help, lesson plans and student activities are provided to help teachers integrate the software into their curriculum.
http://www.LivingGraphs.com/common/products/na/files/na.msi - 2Mb - Download - Screenshot

3D Coral World screensaver
Far away in the ocean near a lost tropical island there is a paradise coral world full of joy and harmony. Merry exotic fishes enchanted by natural music play with each other in bright solar beams. All they want is to inspire you to be cheerful and always follow your dreams.
http://www.7art-screensavers.com/files/CoralWorld3Dinst.exe - 12Mb - Download - Screenshot

Space Pyramids
Try to challenge yourself while you are an aeronaut of an orbiting station. You have to build solar batteries on the flying station or you will be dead. This honorary mission will challenge you and you should rely on your logic. Advanced 3D visualization and modern music will distract you, but... The commodore will be pleased to help you in demo mode.
http://mirror1.xdgames.com/spyrinst.exe - 2Mb - Download - Screenshot

Titan Attacks
Save the Earth from evil alien invaders from Titan! Fight your way across the solar system to defeat the aliens on their homeworld. Upgrade your ship with bigger guns from bounty money. Defeat the alien mothership! Fantastic retro arcade action over 100 levels with 5 worlds.
http://www.puppygames.net/downloads/SetupTitanAttacksDemo.exe - 7Mb - Download

DX ToolBox
DX Toolbox gathers information on solar and geomagnetic conditions that affect radio propagation. It also features several propagation forecasting tools, and is ideal for the ham radio operator, shortwave listener, or other radio enthusiast.
http://www.blackcatsystems.com/download/DXToolBox.zip - 3Mb - Download - Screenshot

EasySky
Astronomy software, shows you the complete night sky (340,000 stars) and our solar system in a 3D orrery view with the planets, asteroids, and comets from any place at any time. All settings can be saved in different documents. Animations let you understand the motions of the celestial bodies or... The demo version contains less objects and some minor restrictions. ... Printing.
http://www.easysky.de/eng/download/esd30115eng.exe - 6Mb - Download - Screenshot

euphOrbit
euphOrbit version 1. 0 is a simple tool designed to simulate the motions of planetary bodies in space. The primary design philosophy of this program was that it had to simulate asteroids speeding through our Solar System close to "true life". Initial positions of planets and asteroids are... The bodies are then plotted as they move according to the laws of gravitation.
http://mjab2002.republika.pl/setup.exe - 0b - 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

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