"Upon you and you alone must rest the fate of the universe. You are the only ones to save it." Thus spoke the mysterious Cosmic Engineers to a small group of human beings on the rim of the solar system. Somewhere out there in the vastness of the galaxies lurked the greatest challenge they would ever face - the catastrophic fury of the Hellhounds of Space. Promptly, courageously the earthlings boarded their galactic spaceships and journeyed out far beyond uncharted stars, plunging into dangers too awful even to contemplate.

Adventurers journey into the foreboding unknown regions of outer space in these two classic science fiction tales from the Hugo and Nebula Award–winning author. The Trouble with Tycho Prospecting on the moon is grim, dangerous, and usually unrewarding. Most greenhorns don’t know that until after they arrive, and Chris Jackson is no exception. He put everything he owns, and then some, into this venture, and he’ll be ruined if he fails. Jackson’s last chance at success is hidden in the uncharted crater Tycho—where three expeditions have already disappeared. Jackson, a beautiful immigrant, and a visiting doctor set out to find their fortunes . . . and discover whether the terrifying rumors of what lurks within Tycho are true. Cosmic Engineers “Upon you and you alone must rest the fate of the universe. You are the only ones to save it.” Thus spoke the mysterious Cosmic Engineers to a small group of human beings on the rim of the Solar System. Courageously journeying beyond uncharted stars, somewhere in the vastness of the galaxy, they will meet the greatest challenge of their lives—the catastrophic fury of the Hellhounds of Space.

The first comprehensive critical study of hard science fiction, this book reveals how the term hard science fiction originated, and how arguments about its range and nature have unfolded. Westfahl shows that hard science fiction is generally characterized by the author's extreme concern for scientific accuracy and logic. Identifying two characteristic forms of hard science fiction, Westfahl closely examines several representative works: Arthur C. Clarke's A Fall of Moondust, Hal Clement's Mission of Gravity, and Charles Sheffield's Between the Strokes of Midnight. This book offers new insights into hard science fiction and provides a wealth of information about what members of the science fiction community have said about this relatively recent genre.

The first comprehensive critical study of hard science fiction, this book reveals how the term hard science fiction originated, and how arguments about its range and nature have unfolded. Westfahl shows that hard science fiction is generally characterized by the author's extreme concern for scientific accuracy and logic. Identifying two characteristic forms of hard science fiction, Westfahl closely examines several representative works: Arthur C. Clarke's A Fall of Moondust, Hal Clement's Mission of Gravity, and Charles Sheffield's Between the Strokes of Midnight. This book offers new insights into hard science fiction and provides a wealth of information about what members of the science fiction community have said about this relatively recent genre.

Irrational mechanics is defined as a futurist science that will eventually open the door to faster than light travel, time travel, psychic engineering, God-like abilities, and the resurrection of the dead. This is not a scientific theory of irrational mechanics, but a narrative sketch that tries to communicate the flavor of what a futurist science of irrational mechanics could be. Irrational mechanics will eventually become the foundation of a new religion, one that is inspired by science instead of revelation, but is still able to offer all the comforts of traditional religion. Yes, the universe is striving toward a purpose, and we are part of that purpose. Yes, the cosmic operating system has the attributes that traditional religions have assigned to their God(s). Yes, you’ll live again after death with your loved ones.