The Mayflower Project

The Mayflower Project is the first book in the Remnants series by K.A. Applegate.

Back Cover Summary
It's 2011. An asteroid is on a collision course with the earth. And eighty people have been given the opportunity to survive. To leave the planet before the world ends.

Jobs isn't quite sure of what's going on. Just that he and his family are a few of the lucky ones selected to board a revamped space shuttle. A shuttle that will leave Earth just before the final impact. No one knows where they're going. Or if they'll make it there at all. Because there isn't a lot of time for questions. And there are even fewer answers...

Summary
In this book, all the characters die.