Through a succession of terrific adventures and incidents after an accident in outer space we follow two astronauts, a man and a woman fighting against adverse conditions resulting of the total absence of gravity in which they move most of the time in open space, floating and sometimes drifting helpless at random The appalling visual scenes are filmed with great mastery and the performers do a great job with special mention of Sandra Bullock. The visual effects are of excellent technical quality. This movie has practically no story or plot since its main theme is made of the astonishing rhythm of dreadful and wonderful scenes that make the viewer to hold his breath most of the time. This is the more important aspect of the movie and makes it worth to be seen. Of course we must take for granted the unlikelihood of a few scenes like it is usual in this kind of movies