- Buzz Aldrin: The first man to have walked in space was "deeply marked" by the film and "extremely struck by realism with which the feeling of weightlessness is figured" "The film has a glance. very fair on the beauty of the Earth, he says, even if there is not enough clouds, and that the reliefs, as seen from space, are perhaps too precise
- Michael J. Massimino and Scott Parazynski: If they praise the precision deployed in every detail, from the smallest tool to the possibility of such a disaster scenario, they explain that no physical law explains the fatal drift of personage of George Clooney. he would have in truth just a childish gesture to make turn back with the good company of Sandra Bullock. The life-saving journey performed by Bullock, from Hubble to the Chinese space station, while one and the other are in distant orbits, seems also likely that to see a shipwrecked man, rally London from the Caribbean by swimming
- The astrophysicist Neil deGrasse Tyson: Why hair of Bullock (in scenes in zero gravity convincing), stay-they in place rather than floating freely on his head ?
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