Neil deGrasse Tyson went on a bit of a tear on Twitter about Gravity. Love the man, but he's honestly coming across like a bit of a dick here. http://www.theverge.com/2013/10/7/4811336/neil-degrasse-tyson-isnt-falling-for-gravity
Is the movie 100% scientifically accurate? No. It's a movie and most of these inaccuracies go to serve the film's narrative. I didn't mind the ones I noticed when viewing the film and I don't mind the inaccuracies he points out here. None of them took away the overall feeling of realism the film portrayed in the theater or the enjoyment it gave me.