:>... Also, as implied by other posters, why 
:>do you need to boost the orbit on this mission anyway? ...
:You don't *need* to, but it's desirable.  HST, like all satellites in
:low Earth orbit, is gradually losing altitude due to air drag.  It was
:deployed in the highest orbit the shuttle could reach, for that reason.
:It needs occasional reboosting or it will eventually reenter.  (It has
:no propulsion system of its own.)

Has any thought been given as to how they are going to boost the HST yet?
Give it a push?  I can see the push start cartoons now :-).
