Satellite info comes from a variety of third-party imagery sources, and those photos are stitched together and superimposed on the map information. Consequently, there are times when an address appears to be in the wrong location, and you'll notice patches of ground with different image quality.

Satellite images are also not immediate. The photos for any given area could be several years old. Google will often buy new images when something major happens in an area, such as Hurricane Katrina or the earthquake in Haiti, but don't be surprised if the satellite image of your house doesn't include your recently built garage.

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