Google Earth is a computer software application. It is about 14MB which does not take up a lot of room. You can view maps of where you live or where your friends live or even where one of your family members in another country lives. This is a great mapping system that allows you to also view 3D representations of buildings. The 3D terrain allows you to view place mostly in 3D, which is really cool if you want to go to a place and see what it looks like. You can zoom in and out to view larger places or zoom out to view your country. It can be used as a route planner and finder to help guide you to your destination. What a great application to have on your computer or laptop, with great features and is easy to use. Give this application a try and you will like it straight away.