Description:

Antigravity Machines! (six kinds) Space Warps! Black Holes! Strange Matter! Time Machines! Reactionless Drives! Faster than Light Drives! All the known ways to build real starships! Finally, someone who puts the science back in science fiction! Robert L. Forward, Ph.D. and physicist to the stars, gives us a tour of the real far-out physics theory being discussed by scientists today -- and then shows us what it's all for in his science fiction stories showing people utilizing those theories, and the impact they will have on a future that is --