Spiral Dance
Jumping Off the Rim

In which the edge of forever is viewed from the outside.

There’s a lot of information in this chapter about how this version of interstellar travel works, which I frankly admit mostly goes over my head.

We also get a description of the geography of the galaxy, and an explanation of why this particular one of the galaxy’s three arms is the Arm. (Make a note of the number of arms; there will be a test on this later.)