"Greg D. Moore (Strider)" wrote:
"Starlord" wrote in message
...
That's the idea I've been pushing, not only could it be serviced but
also
controled from the ISS, have it maybe about a mile from it in same
orbit.


And what happens the first time you reboost ISS?

And not only that, except on a perfect sphere, with a separation of 1 mile
or so, that will gradually change over time.

Even over a "perfect sphere", the differential drag would move ISS and HST
apart rapidly.

Roger
--
Roger Balettie
former Flight Dynamics Officer
Space Shuttle Mission Control
http://www.balettie.com/