Destination Unknown

Destination Unknown is the second book in the Remnants series by K.A. Applegate.

Back Cover Summary
When the world ended, there was the Eighty. Eighty people given the chance for survival. Given the chance to find a new place to live. Somewhere to start over after an asteroid had destroyed the entire human race. And now, after a five-hundred-year "nap", the Eighty have landed. But something about this new place isn't quite right. Not right at all.

Jobs, 2Face, Mo'Steel, and the others don't know if they're on another planet, if they're dreaming, or if they're really still alive. And if they are, can they survive on this strange, new world?