James Blish was one of the great science fiction writers of the twentieth century. His other novels include the Hugo Award-winning "A Case of Conscience, Doctor Mirabilis, Black Easter" and"The Day After Judgment." His later work includes the first twelve of the Star Trek novel series (all based on the original TV scripts) and "Spock Must Die," the first original Star Trek novel.
"A compelling future history, a tale of thistledown cities blown by
the winds of time. This is one of sf's most original concepts, an
exciting tale deepened and made utterly plausible by Blish s craft
and his mature understanding of people and history. If you haven t
read this yet, I envy you. Blish s cities will fly through your
dreams." Stephen Baxter
"In a century that brimmed with human short-sightedness, James Blish was one of the very first genuine visionaries of a new millennium. If the universe doesn tturn out to be as bold and vivid and wonderful as he imagined, well . . . it ought to!" David Brin