There is a threat of a chain reaction, but it would take more time:
http://www.telegraph.co.uk/science/...on-could-destroy-communications-on-Earth.html
This is the so-called Kessler Syndrome, as talked about in these reviews:
http://www.thespacereview.com/article/2376/1
http://www.spacedaily.com/reports/Gravity_draws_stellar_reviews_awards_buzz_999.html
http://www.space.com/23105-gravity-film-review-astronaut-leroy-chiao.html http://www.space.com/entertainment/
http://forum.nasaspaceflight.com/index.php?topic=28092.0
http://forum.nasaspaceflight.com/index.php?topic=28092.msg1105831#msg1105831 EASTER EGGS
There have very likely been cases where two cars in an otherwise empty parking lot hit each other--so since to engineer is human, I would suggest the following scenario instead:
Now instead of the ASAT test, I would have had a depot get hit by a micrometeoroid just as, say, a Mars cycler was going to do a flyby of ISS.
The venting depot hits the cycler, allowing the huge debris swarm of around the same altitude and overall speed.
New-spacers may not like that, but it makes for more technical sense than comsat bits suddenly in LEO clouds. I might make the depot a hypergolic, multi-module affair that was sub-standard, and put into a bad orbit by an over-zealous alt.space advocate, and have it also suffer from overheating, initially.
This would serve as a cautionary tale against depots.
Gravity is set in an alternate universe where someone had the foresight to have shuttles keep flying, with Hubble launched where ISS would be built. Then too, if that were the case, why not just send an OMV if we had that foresight.
http://www.astronautix.com/craft/omv.htm
The Columbus Free-flyer was as close to co-orbital assets close together as space station ever would have gotten:
http://www.astronautix.com/craft/colrmtff.htm
My only gripes were:
The MMU was a bit too maneuverable, and that type of activity wouldn't be allowed.
The Chinese space Station will not look just like Mir, and she should have bailed out of the Soyuz a bit earlier, to lead the target better.
Space Cowboys was a bit more realistic--showing a Polyus type craft opening above a shuttle. There, they also put an astronauts face inside a CGI suit. I don't think Sandra actually wore a real helmet for the first part of the movie, and the only time we see Clooney wear a suit was his character as a "ghost."
In the past, you shot scenes and motion controlled the models. Here, much is CGI and you motion control the actors, swinging around their faces.
The greatest danger seemed to be at the very end, where she was about to drown. I wondered if a salt-water croc would come up from behind.
Being of a morbid type, I would have her struggle to stand, as she did in the film due to a weakened condition from returning from space, with perhaps the couch hurting her on impact--and then she would fall, strike her head, and lose her life just as her daughter did, as animals from the Serengeti circle...
I wonder what would happen if this thing broke up
http://www.space.com/23091-haumea.html