[a_Turk]

In order for bodies such as satellites, the space station, or the shuttle to remain in orbit and not fall into the earth they have to move at some pretty high speeds (angular velocity) around the planet. In effect, the force of gravity has to equal the centrifugal force resultant from the angular velocity of the body. That velocity is about mach 20 for the shuttle, less for lighter objects or for those farther from the planet, and more for heavier ones or those closer to the planet.

Now, the space station and the shuttle were not travelling in orbits which were at identical angles to the equator. That means that, in order to bring them in line with each other, another set of forces must be overcome.. Try this with the front wheel of a bicycle: Remove the wheel. Hold it at it's axis with both hands. Have someone spin it. Now try to change the angle of the axis (move one end but not the other). You'll get enormous forces resisting you.

Once you're in orbit it's very expensive to change that orbit, especially your angle with the equator..

[John Jamieson]

almost right, weight has nothing to do with it.

[Bobby777]

yes I know about that ... my question was how far apart their orbits were ... however the question about potential damage to the wing seems to have been known from the launch ...