Originally Posted By: paul
he would have you thinking that you could orbit around the earth in a spacecraft of any mass as long as the spacecraft were a certain distance from the earths center.

And I would be absolutely right. Have you happened to notice that there are a lot of Earth orbiting satellites? And have you noticed that there are a lot of them in the same orbits? And have you noticed that they are not all the same mass? This shows up best of course in all the satellites in geosynchronous orbit.

Bill

C is not the speed of light in a vacuum.
C is the universal speed limit.