The free version of Google Earth requires you to manually geo-locate geographic information system (GIS) images, but Google Earth Pro helps you automatically find them. The free version of Google Earth lets you print screen resolution images, whereas Google Earth Pro offers premium high resolution photos. There are several differences between the free version of Google Earth and Google Earth Pro. The Google Earth desktop client hit the billion download mark in October 2011.
Under Keyhole, the application was known as EarthViewer 3D. Google Earth was created after Google acquired CIA-funded Keyhole Inc. Google Earth is a geospatial software application that displays a virtual globe, which offers the ability to analyze and capture geographical data. Google Earth Pro used to cost $399 per year. Today Google has announced that Google Earth Pro is now available for free.
