If you see a plain fly by, you can track which plane it is, what kind of plane it is,
where it has come from and where it is going. You can even use Google Earth for a cockpit view!
Flightradar24 pulls data from the Federal Aviation Administration in the United States and the automatic dependent surveillance-broadcast (ADS-B) system in other countries.
About 60 per cent of the airplanes that carry passengers are equipped with ADS-B, so the map isn’t even showing every flight there is. Even still, zooming out a bit shows a mad cluster of planes over the U.S. and Europe
(from Daily Mail)
Below is a cool graphic of air traffic over North America, more at [url=http://maps.unomaha.edu/AnimatedFlightAtlas/FlightTrafficAnimation.html]http://maps.unomaha.edu/AnimatedFlightAtlas/FlightTrafficAnimation.htm
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