Because of this design World Wind has better performance when compared to the free version of Google Earth when viewing external imagery such as the Blue Marble NG which is available for both programs. World Wind has been built with the intention of having multiple views of Earth which one can look at separately, or blend together. On the other hand, when World Wind is installed it comes with many views of the Earth (see World Wind Data Sources), each serving a different purpose, including Blue Marble which provides an overview of the Earth through the seasons, and several Landsat layers which include visible and false color images of Earth. Google is attempting to keep this view as current and high detail as possible, giving you a good approximation of what the Earth currently looks like. This view is made up of different photographs from different times and put together to look like one complete image. When installed Google Earth comes with one view of Earth. Google Earth covers Earth, Moon, Mars, and space. World Wind covers Earth, Moon, Mars, Venus, Jupiter and Sloan Digital Sky Survey, and can support additional worlds via add-ons. See the Google Earth comparison chart to see what is available in each version. Copyright of code and images still applies, but there is no restriction on using the application.ĭifferent versions of Google Earth have different features. Basically anyone can use it, for any reason, from any location. NASA World Wind has very open terms of use. Google Earth has been banned in several government agencies because of the terms of use. In commercial or business environment GE Free may be used only for internal use. Google Earth Free is licensed for Home/Personal use. This isn't to say that Google doesn't want people to learn from their product, but that is not the main intent. It is more of a geographic search tool than a purely educational one. With Google Earth you can find locations like restaurants, hotels, schools, museums, etc., and even your own location. Google Earth is not only a commercial product with the main intent of making money, it also is available in a free version, which is a platform for everyone to explore, find, and locate places around the world. The hope with World Wind is that people can get a better understanding and appreciation of the world around them. With tools such as WMS and MODIS built in, World Wind allows viewing of recent world events, weather patterns, fires, and any other imagery people have desired to make available. World Wind is an education tool that allows users to explore many aspects of the Earth and Moon. NASA World Wind is available free of charge. Additional components for the $400 per year version cost $200 each. These versions start at $20 a year and quickly jump to $400 a year, with the Enterprise versions requiring contact from a sales person. As well as the free version (which can display small ads), there are additional versions of Google Earth available with different features.
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