Brimstone

Helen Rogers discovers the threat of a cataclysmic asteroid impact. Her peers laugh her out of an international seminar. She lobbies rich people to sponsor an escape to Mars. Then the difficult tasks of managing people and organizing the building of a suitable spacecraft begin. As the asteroid approaches, the spacecraft is prepared for launch from orbit with nearly two dozen carefully selected people.
On the ground, world governments can no longer hide the threat and widespread panic ensues. The one-way voyage through space is long and dangerous. Mars is a hostile environment that does not easily support life. No provisions are made for a return to Earth. Did the pioneers make the right choice? Read on to see how they manage.