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 Google Earth Free It’s a globe that sits inside your PC. You point and zoom to anyplace on the planet that you want to explore. Satellite images and local facts zoom into view. Tap into Google search to show local points of interest and facts. Zoom to a specific address to check out an apartment or hotel. View driving directions and even fly along your route.
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Windows XP
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 Planetarium See the brightest 2500 stars, all 88 constellations, all nine planets and the moonphase from 1600 AD to 9999 AD from any location on earth. Ideal for students and astronomy beginners.
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page Windows 2000 / XP / Vista
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 Earth3D is a program that visualizes the earth in realtime in a 3D view. It uses data from NASA, USGS, the CIA and the city of Osnabrück. I would like to thank these organisations to allow me to use their data!
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Windows 98 / ME / 2000 / XP
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 Earth Alerts is a Windows-based application that provides alert notifications, reports, and imagery on many types of natural phenomenon that are occurring real-time both worldwide as well as in specific locations within the United States (including Guam, Puerto Rico, and the U.S. Virgin Islands). Earth Alerts also lets you track weather and earthquake activity for Global locations!
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Windows XP / Vista
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 NASA World Wind allows any user to zoom from satellite altitude into any place on Earth, leveraging high resolution LandSat imagery and SRTM elevation data to experience Earth in visually rich 3D, just as if they were really there.
Particular focus was put into the ease of usability so people of all ages can enjoy World Wind. All one needs to control World Wind is a two button mouse. Additional guides and features can be accessed though a simplified menu. Navigation is automated with single clicks of a mouse as well as the ability to type in any location and automatically zoom into it.
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Windows 2000 / XP
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 Celestia The free space simulation that lets you explore our universe in three dimensions. Celestia runs on Windows, Linux, and Mac OS X.
Unlike most planetarium software, Celestia doesn't confine you to the surface of the Earth. You can travel throughout the solar system, to any of over 100,000 stars, or even beyond the galaxy.
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page Windows 98 / ME / 2000 / XP
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 Solar Model is realtime modeling of solar system. It allows user to navigate in space, to control time counting (speed-up time flow) and estimate real movement of space bodies like planets, dwarf planets and moons; estimate its nowadays positions in space. You may select two possible views: Solar System view or Milky Way galaxy view. It also allows user to bind camera to space objects (for example, you can look from Moon on Earth in real time flow). Solar Model renders beautiful 3D space environment.
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Windows 98 / ME / 2000 / XP / Vista
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