Earth Explorer is GPS Enabled digital map software with high-resolution satellite imagery shaded relief topographic imagery and blending imagery of the two. It also include location information of 270 countries and regions 50000+ cities 15000+ islands and 50000+ earthquakes from 1973 And outline information of political boundaries rivers lakes coastlines of the world and etc. All those map information was integrated together for providing a total 3D view of our beautiful planet earth. You can place your own placemarks and path routes to the map show GPS tracks on the map and keep them with the maps if you connected with a GPS device. Beside these it has many other interesting functions you can regard it is a kind of educational scientific software of geography. Key Features: 1. Support realtime satellite map GPS navigation on vehicle/ship/plane 2. Support 30m-res satellite image(Landsat7) and 90m-res SRTM picture exploring in online/offline mode 3. Include information of 270 countries and regions 40000+ cities 15000+ islands 50000+ earthquakes from 1973 and vector layers includes political boundaries coastlines rivers lakes longitude-latitude grids 4. User can add their own Placemarks Paths GPS Tracks to Earth Explorer 5. User can define and add their own map style to Earth Explorer 6. Support NEMA-0183 compatible GPS receiver 7. Other functions like Measure and calculate distance and bearing between any two location find by name show day/night shadow effect adjust Gamma and etc. 8. Download maps to disk cache in background (Advanced license).