Consider Pipnonia — David Marusek

Despite the alien's best efforts, the so-called Little Nudge has failed, and the rogue planet Pipnonia is once again on a collision course with Earth. It's time for the Big Bump, the alien's last-ditch effort to save Earth and its inhabitants from total annihilation. But first it pressures Ranger Jace Kuliak to accompany Deut Prophecy, the Thirteenth Apostle, on her mission to Pipnonia to preach to its doomed population.Meanwhile, civil society is disintegrating around the world. Vera Tetlin, the popular governor of Alaska, and her family are on the run from agents of the Antichrist. And Doomsday Preppers from the Lower 48 are seeking refuge in the little ghost town of McHardy. Among them is a petty tyrant and racist who wants the town for himself.Things are heating up — literally.