"TORONTO -- A Canadian space scientist has calculated how Santa Claus manages to deliver presents to almost a billion children around the world during Christmas Eve - at least the ones who haven't been naughty. All it takes is precise orbital mechanics, fast-working elves, multiple time zones and a helping hand from NASA's shuttle, says Andrew Yau at the University of Calgary. It also requires a sleigh longer than two football fields that orbits the Earth at 23 times the speed of sound."If you're interested in tracking Santa around the world, NORAD is the place to do it. According to them they use ''four high-tech systems to track Santa - radar, satellites, Santa Cams and jet fighter aircraft." There's no harm suspending disbelief once a year I suppose.
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