Our space movies tend to lean on externals for their frights; aliens, psychological horrors, more aliens. But if this latest trailer for Alfonso Cuarón's Gravity proves anything, it's that space is scary as hell on its own. Especially when you're drifting helplessly through it.

What's most brutal about the scenario that unfolds here is that it feels so real, so entirely possible. And while it's easy enough to hold your breath through a two-minute trailer, I'm not sure how anyone will be able to make it through the entire movie.

We'll find out when Gravity opens on October 4th. In the meantime, enjoy those spacemares.