From the beginning of time people have looked to the heavens to find order in the universe and divine meaning and direction from celestial events. The same skies that used to instil fear in the ancient prophets today spawn a rich apocalyptic science for awestruck stargazers. This book explores the shared quest of prophets and astronomers to explain the strange phenomena of our skies - from the apocalypse foretold in Revelations to modern science's identification of multiple cataclysmic threats, including the impact of comets and asteroids on earthly life, the likelihood of future collisions, the meaning of the solar eclipse and the death of stars, the implications of black holes for time travel and the ultimate fate of the universe and time.