Starting with the virtual globe, you can pan around the world and zoom down to city level, search and explore different places, measure distances, get directions from one point to another, view landmarks and get additional information about certain locations.
There are several thematic maps you can choose from, including a world roadmap, a map with Earth as seen from space, Earth’s city lights at night, a topographic map and others showing the average temperature or precipitation in certain months. You can also download or create new maps and export them as JPG or PNG files.
Furthermore, Marble allows you to access various online services and display weather information or others related to earthquakes, postal codes and satellites and also view Wikipedia articles about different locations.
Marble can be certainly taken into consideration if you’re looking for an alternative to Google Earth. It has similar functionalities and is completely free and suitable for educational purposes.