1)   EarthBrowser 2.9.3
An innovative earth simulation that combines an easy to navigate 3 dimensional globe with real-time weather, live earthquakes, webcams, volcanoes and current cloud formations. Great educational tool, a must have for avid weather watchers!
earth, map, weather, cloud animation, cloud, satellite, earthquake, volcano, webcam, world time,

 2)   Click Clock 2.0.0
Animated weather radar & satellite, local temperature in tray, local weather, internet time sync, sun/moon rise, map, animated moon phase, planets, eclipse, equinox/solstice, meteors, dictionary, thesaurus, calculator, full year calendar, 27 holidays
weather, clock, calendar, radar, satellite, temperature, astronomy, map, moon, phase,

 3)   MaterialWorlds Simulations 1.5
Live interactive physics simulations let you explore the Solar System (orbits, seasons, gravity, tides, comets and satellites), play snooker and experiment with Laws of Motion, bridge,crash,ideal gas,pendulum clock and siege engine simulations.
virtual reality, science, physics, experiments, simulation, games, solar system, geocentric, astronomy, earth,

 4)   Lunar Calendars and Eclipse Finder 6.09
A program to search for eclipses (lunar, solar, total, annular and umbral), to calculate the phase of the Moon at any given date and time and to convert between dates in the Gregorian and Julian calendars and dates in various lunar calendars.
Moon, lunar, phase, eclipse, Sun, solar, annular, date, calendar, calculator,

 5)   Eagle Lander 3D 2.1.1
Eagle Lander 3D (EL3D) is an authentic simulation of the Apollo lunar landings. EL3D includes accurate renditions of scenery, flight dynamics and the lunar module.
lunar, landing, simulator, lm, apollo, moon, p64, p66, flight, historic,

 6)   Planetarium 1.33
See 2500 stars, all 88 constellations, planets and the moonphase from 4713 BC to 9999 AD from any location on earth. Print todays night sky ! Nice visuals, smooth animation, simple controls, good planet data too.
Planetarium, Astronomy, Software, Moon, Planets,

 7)   Newton's Aquarium 1.0b2
Newton's Aquarium is an interactive physics package that helps students visualize and understand Newton's Law of Universal Gravitation. While creating and exploring their own solar systems, students encounter the core concepts in classical physics.
acceleration, force, gravity, kinematics, mass, moon, Newton, orbit, physics, planet,

 8)   Dynamic Biorhythms 5.27
Calculates Biorhythms and Horoscope compatibility for any person, shows Moon Phase with readings, contains celebrities database with 3700 profiles and more!
Biorhythms, ICQ, I-Ching, Horoscope, Astrology, Hexagram, Moon, Phase, lunar, cycles,

 9)   PrettyMap 1.6
View maps of Earth and other planets with PrettyMap! See current day and night areas, learn geography with the quiz, enjoy 3D elevation surfaces, measure distances between locations and create your own maps with special places!
map, planet, Earth, Moon, Mars, elevation, geography, GIS, day and night, quiz,

 10)   7art Sun and Moon ScreenSaver 1.5
Shining Sun and tender Moon will delight you very soon with its brilliance in the sky bringing us delicious pie. This free screensaver will let your desktop become a source of eternal pleasure with amazing scenery of golden Sun and silver Moon!
screen, saver, desktop, image, picture, amazing, screen, shot, true, color,

 11)   Planet Quest 4.0
In the last ten years astronomers have discovered over 150 planets beyond our own solar system. Planet Quest is our artistic vision of what these worlds might look like, using the awesome power of your PC to create an infinity of stunning 3D Worlds.
screensaver, screensavers, screen saver, planet, planets, world, worlds, extrasolar, nasa, space,

 12)   Outer-Rim Pod Digger for PC 1.0
A hybrid strategy/puzzle (stratpuzzle) game which pits you, the almighty pod digger, against all odds as you rescue the poor Bubblemen from the lifepods deep within the martian soil. This game is sure to challenge your creative wits!
strategy, build, blocks, moon, lazer, mine, miner, dig, outer, rim,

 13)   Shiny Clock screensaver 2.4
Shiny Clock shows the palms of a man holding a shining bulb of a clock against the dark sky. The stars above are twinkling invitingly. The screensaver is a nice way to personalize your desktop and get inspiration.
time, harmony, watch, clocks, screensaver, love, sky, mandala, sun, moon,

 14)   3D Outer Space 1.0
Let these images of outer space and cosmic sounds mesmerize your imagination. Watch and wonder as space stations, planets, stars, and galaxies appear before your eyes--all in glorious 3D. Fitting and complementary music included.
3d, screensaver, free, shareware, outer, space, scenes, nighttime, outerspace, galaxy,

 15)   CyberSky 4.0.1
CyberSky is an accurate, yet easy-to-use planetarium program that provides an excellent way to learn about astronomy and explore the sky visible in the distant past, the present, and the far-off future.
asteroids, astronomy, charts, clusters, comets, constellations, deep-sky objects, education, exploration, galaxies,

 16)   Chinese Calendrics 7.01
A program to convert between dates in various Chinese calendars and dates in the Gregorian and Julian calendars, and to find lunar new year's day and leap months for any year in the Chinese Calendar.
chinese, calendar, date, year, astronomy, software, moon, calendrics, lunar, solar,

 17)   1 Moon Above 4.2
A stunningly beautiful, useful, and educational 3D screensaver, featuring the Moon, and allowing you see the current phase of the moon and the phases of the moon over the coming days and months. Fully configurable. Never miss another eclipse!
moon, phase, screensaver, screensavers, screen saver, opengl, 3D, simulation, Earth,

 18)   Millennia Calendar 2.0.0
Local time for any locations on Earth; calendars, holidays and memorial days of many countries and religions; coordinates and time of rise, transit and set of the Sun, the Moon, and Planets; equinoxes and solstices; solar and lunar eclipses.
millennia, calendar, past, julian, gregorian, indian, ancient, egyptian, coptic, ethiopian,

 19)   Adastra FREESTAR 4.02
Experience accessible astronomy with a real-time sky, comprehensive reports, arcsecond accuracy, and exciting events such as animation and live tracking.
astronomy, astro, astronomical, planetarium, sky, skymap, star map, celestial atlas, coeli, stella,

 20)   1st Light 3D Solar System Simulator 3.0
1st Light is a fully interactive 3D solar system creation tool and screensaver. The free version allows users to view and load any solar system. The paid version allows users to create their own solar system with any texture and # of planets.
3D, big bang, solar system, interactive, real-time, screensaver, simulation, universe, create, texture,