Would anyone know this book?

So there's this book I remember where it's a sci fi futuristic setting where a boy wakes up from a pod early and by the time everyone else wakes up he's an old man. I think him and his sister end up venturing to a planet where they meet some really pale kids, who kind overly nice. They end up finding out that these kids are very light in weight, and are actually made from another substances.. Also that the planet is alive, and it made the children. I only ask this because of this new movie called Passengers with Chris Pratt, and Jennifer Lawrence had the same name, and waking pod concept. So I was wondering if that was the name of the book, or was it something else?..