posted on Sep, 10 2008 @ 09:43 AM
This will be the first time in quite a few years that two shuttles will be sitting on both shuttle launch pads simultaneously.
To me it seems that the greatest vulnerability on this flight, aside from the usual risks, would be to the astronauts on EVA. They're discussing the
increased risk of orbital debris strikes from micrometeorite-sized objects - since HST is in a much higher orbit than ISS the debris environment is
worse because there's less orbital drag up there to bring the garbage back down to earth. That means more paint flecks and other tiny specks that
could hit an astronaut on EVA at dangerous relative speeds.