The crack in space (1977, Eyre Methuen)
188 pages
English language
Published Nov. 22, 1977 by Eyre Methuen.
The first seven chapters of Philip K. Dick's The Crack in Space were first published as Cantata-140 in Fantasy and Science Fiction (07/1964). Cantata-140 was expanded from the short story Stand-By (Amazing 10/1963). The Gollancz 2003 edition of Cantata-140 is the text of The Crack in Space, not the novella published in 1964.
It's a little jarring to read aging science fiction where some of the speculations are now obviously off, but like most PKD stories there's a central question that is incisive and intriguing.
