
A new place is being built, a world of huge dimensions, encompassing millions of miles, stronger than any planet before it. There is gravity, and with high walls and its...

Crashlander Beowulf Shaeffer has long been one of the most popular characters in Known Space. Now, for the first time ever, Larry Niven brings together all the Beowulf...

The gigantic comet had slammed into Earth, forging earthquakes a thousand times too powerful to measure on the Richter scale, tidal waves thousands of feet high. Cities...

The sequel to “Ringworld”. Louis Wu, Speaker-to-Animals, and the Hindmost return to Ringworld. Their aim is to prevent cataclysm. In the process, they find themselves...

Hugo Best Short Story winner (1967).Asimov Comments on Neutron StarFor the last dozen years or so, what we might call “hard science fiction” has receded somewhat into...

Phssthpok the Pak had been traveling for most of his thirty-two thousand years. His mission: save, develop, and protect the group of Pak breeders sent out into space...

In this sequel to “Ringworld” and “Ringworld Engineers,” the ring is still home to many alien species. The last Puppeteer is still manipulating those he can, and Louis...