I couldn't finish gravity.. there was no storyline or scifi that got me interested. I don't get it. Interstellar on the other hand.. probably the best space move I've seen. They actually apply quantum mechanics too.
I like Sandra so the plot was not important.
Really the best space movie? What about Space Odyssey, Star Trek, Contact... There's a lot of great space movies out there
2001 was like gravity - really thin plot, lots of cinematography. Did not enjoy one bit. And yeah, I know this is not a popular opinion.