But just think about what the sun does during the course of a day, or what the moon does, or what the stars do. They move across the sky in rather complicated paths, paths that change with the time of year. A fancy ... If ita#39;s in an orbit that is too low, it circles the earth faster than the earth rotates, and it moves toward the east when you look at it. ... And so there had to be a middle ground, where the satellite wouldna#39;t move at all, from the perspective of an antenna fixed to the eartha#39;s surface.
|Author||:||Harry L. Shipman|
|Publisher||:||Springer - 2013-11-22|