In “Passengers,” a 2016 science-fiction thriller film two space travelers wake up 90 years too soon from an induced hibernation on board a spaceship bound for a new planet. From “Aliens” to “Interstellar,” Hollywood has long used suspended animation to overcome the difficulties of deep space travel, but the once-fanciful sci-fi staple is becoming scientific fact. The theory is that a hibernating crew could stay alive over vast cosmic distances, requiring little food, hydration or living space, potentially slashing the costs of interstellar missions and eradicating the boredom of space travel.