GoogleEarth is one of the most widely available geospatial viewers in existence. The XML data format used by GoogleEarth for geospatial data is called KML. The Open Geospatial Consortium adopted KML as a data standard. Converting rasters into a KML overlay compressed in a KMZ archive file is a very popular way to make data available to end users who know how to use GoogleEarth.
We will use the SatImage raster again available at the following URL if you haven't downloaded it from previous recipes:
https://geospatialpython.googlecode.com/files/SatImage.zip
Place this raster in your /qgis_data/rasters
directory.