Mostly that's because it features two of the hottest stars currently working in the form of Jennifer Lawrence and Chris Pratt and that should be enough to get bums in seats. If you need more, the latest trailer has extra sci-fi stuff.
The script has been around Hollywood for more than 10 years and has even gotten close to being made before with Keanu Reeves and Reese Witherspoon in the lead roles. The setup is decent enough and it certainly looks pretty but it's also ballooned in costs, partly due to the high salaries of the leads. Really it's all going to come down to how much chemistry the two can conjure on screen, and right now I'm not sure I'm feeling it.
Passengers si going to be in cinemas on December 21st 2016.