1/2 (half) star for the wire/green screen/CGI.

0 (zero) stars for the rest. Who cares about accuracy and education with our fantasy? 1. Anyone who has watched NASA TV broadcasts of shuttle/Hubble/ISS walks will laugh at all the stupid dialogue that this movie pushes forward as a reality. 2. The Russians, as joint participants, would never use a missile to experimentally blow up a satellite close to any working space endeavor. And, there are much easier ways to allow a satellite to de-orbit and burn. And, just to test missile capability for satellites again there are much easier alternatives. 3. Although space junk and natural space entities can reach relative speeds in the tens of thousands of mph it is far fetched to have so much debris accumulatively arrive so quickly. 4. Velocity and acceleration is far more fine tunable with pressurized gas from a MMU so all that flying about was a "bit" excessive. Even the movement by hand seemed excessive. 5. The talking out loud dialogue presented by Bullock would be comical to any who has faced life ending desperate situations. 6. Clooney's scenes were just as far fetched. 7. The tumbling escape module, all aflame, with heat tiles rarely in a position to help should have left her as a cinder. 8. The landing in a lake; removal of suit (do you know how long most people can hold their breath in a relaxed safe environment); walking out of the water like after a dip in the Mediterranean - pleassssee!