How areTv satellites used for transmission while these satellites are constantly moving?

Answer 1

This is an excellent, very important question. The satellite is constantly moving in its orbit around the earth. You would think you'd have to keep moving the antenna on your house to follow it. The solution is to realize that the earth is also constantly moving ... it's rotating once every 23hours 56minutes. Then the trick is to control the orbit precisely enough so that the satellite orbit is exactly over the equator, and the satellite revolves at exactly the same rate as the earth rotates. If they can do that ... and they can ... then as far as anybody on earth can tell, the satellite looks like it's not moving at all, because it's always over the same exact point on the earth, and now you can point your little TV dish at it one time, and never have to move the antenna.