It is easily conceivable that such a force shield must originate from some
power-generating place (the moon) and be projected to the thing it protects.
Trying to put the generating station on the Death Star would be like sitting
in a car and pushing on the dashboard -- you don't go anywhere.
Also, perhaps the physics of the force shield required the gravity well or
something. Or more power than the Death Star could conveniently spare.
-- Allan Pratt
ihnp4!inuxc!iuvax!apratt
Re: "I don't recall the Enterprise having to drag planets around..."
Different technology. The Enterprise is in OUR future. The Death Star is
in the PAST of a galaxy far, far away...
How about this:
The shield generator was the first thing built. To protect the
new Death Star while under construction. As to why the generator
wasn't built in space in the first place, well...