by Jack Richins
My favorite thing to do on Christmas eve – the Norad Santa Tracker. They put up cool videos as Santa visits different countries. This year they have a printable map of the earth so you can track Santa yourself. I love the scientific explainations. For example…
"The moment our radar tells us that Santa has lifted off, we begin to use the same satellites that we use in providing warning of possible missile launches aimed at North America. These satellites are located in a geo-synchronous orbit (that’s a cool phrase meaning that the satellite is always fixed over the same spot on the Earth) at 22,300 miles above the Earth. The satellites have infrared sensors, meaning they can see heat. When a rocket or missile is launched, a tremendous amount of heat is produced – enough for the satellites to see them. Rudolph’s nose gives off an infrared signature similar to a missile launch. The satellites can detect Rudolph’s bright red nose with practically no problem. With so many years of experience, NORAD has become good at tracking aircraft entering North America, detecting worldwide missile launches and tracking the progress of Santa, thanks to Rudolph."