How current are satellite maps?
Satellite maps are as current as when they taken and depends on the satellite provider and/or source for the imagery.
The base imagery, for example, in Google Earth and Google Maps is on average 3-5 years old. Weather imagery and overlays in Google Earth on the other hand are updated an hourly basis. Satellite imagery is Google Earth/Maps is incrementally updated usually about every 2-3 weeks in whatever area an update is available -- the entire globe isn't updated all at once.
Likewise, Bing Maps updates its imagery once a month with typically more than 10TB of imagery, but its aerial and Bird's-Eye images for a particular location can sometimes be several years out-of-date.
One of the most prominent places to view satellite maps would be from 'Google Maps'. You can also download the software 'Google Earth' and take advantage of many of the features such as viewing objects in 3D, flight simulator, view the surface of the Moon or Mars, current traffic conditions and even model buildings into the maps using SketchUp.
Google Maps provides satellite and map views in addition to Street Views. The satellite view of Google Maps uses the same backend satellite imagery database used by Google Earth. The satellite imagery are typically from the GeoEye or DigitalGlobe owned satellites, and some of the imagery are actually aerial photos from aircraft using special high resolution cameras.
Maps may be drawn to scale or not to show more or less detail as needed. Satellite images on the other hand are actual photographs of what the ground and landscape are at a particular time. Both have many uses and tools like Google Maps allow you to switch from a map/street view to a satellite view with a click of the mouse.
Really depends on the source of the satellite imagery. Google for examples purchases or leases its satellite imagery from a number of imagery providers such as GeoEye and DigitalGlobe. Google updates it imagery on Google Earth and Google Maps once or twice a month but not the entire globe at once. Bing Maps (previously Live Search Maps, Windows Live Maps, Windows Live Local, and Microsoft Virtual Earth) is Microsoft's web mapping service. New updates are…
Google Maps doesn't let you toggle between current and historical imagery as does Google Earth. In Google Earth select 'Historical Imagery' under View menu. This shows a timeline slider from which to select available satellite and aerial imagery allowing you to travel back in time to see how things looked in the past.
Google Maps uses the same satellite data as Google Earth and updated together usually once or twice a month. --------------------------------------------------------------------------------------------------------Google Both Google Earth and Google Maps are updated with bulk updates usually once or twice every month but NOT every area is updated on each update.
Best website would be to use Google Maps or Bing Maps, but realize that the satellite imagery is on average 3 years old. Just type in an address from either and it will fly-to that location showing best available aerial or satellite images. With Google Maps you may need to change to the Satellite or Earth View if you're in Map view. Then you can enable Street View to see if high-resolution street-side photographs are…
Google Earth 6 is the most current version of Google Earth. As for the satellite imagery and layers hosted by Google, the same data appears on Google Earth 5 and Google Earth 6 alike. In fact, Google Maps for the most part shows the same satellite imagery as that in Google Earth but sometimes the imagery updates for one is slightly ahead of the other. The frequency of imagery updates is answered in a related…