Nothing. Nothing would be worse than the thing I just described.
Well, Apollo 18 posits exactly that, conveying the struggle on the American astronauts using that oh-so-popular found footage technique. There isn’t a lot to glean from the theatrical trailer, other than something else is out there, and it doesn’t seem to be making their trip more pleasurable.
Moon monsters: Can’t live with ‘em, can’t acknowledge their existence for fear of government reprisal.