get a radio signal does not tell us much about the satellitea#39;s location. ... electronic computing machine that works out minute-by- minute positions, over the earth at a rate 1 50 times faster than the satellite moves! ... A sizable section of the sky is recorded on each picture; on it the moving satellite shows as a series of little streaks. ... Most of the actual satellites discussed above are only a few feet across .
|Title||:||You and Science SCIENCE FOR BETTER LIVING|