The Earth observation satellites obtain data from around the globe, so it is not necessary to go there to confirm the condition of that location like in [Earth Viewer]. Also, the observation area is much wider than the area possible by an airplane, and confirmation can be performed widely at once . Because all images are taken same local sun time, the change of that place such as land usage , sea surface temperature etc. is confirmed by comparing several images taken past and present. Please refer to [Terrestrial Phenomena] and [Activity of The Sensors].

The Earth observation satellite data are stored in CD-ROMs, etc. in digital form . Users can look at these data and add words and colors on the images by using image -processing software on personal computers. Users can recognize the current variation from the past of a certain place by using satellite data analysis software. These data can also be printed out as images.