NASA just broke its biggest rule in space in order to safely send humans to Mars

In the movie Gravity, Sandra Bullock is the sole survivor of her space shuttle colliding with a Russian satellite—experienced astronaut George Clooney has just sacrificed himself to get her to safety. But at that point, there are still 40 minutes left to the movie, so, inevitably, she’s not safe at all. Instead, her refuge at the International Space Station has caught on fire.