First published in Harper's Magazine, November 1957. Please do not merge with the significantly revised version that appears in The Promise of Space (1968).
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1959 | The Challenge of the Spaceship: Previews of Tomorrow's World | Harper & Brothers | Nonfiction | ||
| 1960 |
|
Über den Himmel hinaus: Unser Leben im Zeichen der Raumfahrt | Econ | Nonfiction | 109 |
| 1960 |
|
The Challenge of the Spaceship: Previews of Tomorrow's World | Frederick Muller Ltd | Nonfiction | |
| 1961 |
|
The Challenge of the Spaceship | Ballantine Books | Nonfiction | 81 |
| June 1980 |
|
The Challenge of the Spaceship | Pocket Books | Nonfiction | 98 |