The author discusses the relative scales of interplanetary and interstellar distances.
Please do not merge with the essays from The Exploration of Space (1951, Revised Edition 1959) and The Promise of Space (1968). Completely different pieces.
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| September 1965 |
|
Voices from the Sky: Previews of the Coming Space Age | Harper & Row | Nonfiction | 27 |
| 1966 |
|
Voices from the Sky: Previews of the Coming Space Age | Gollancz | Nonfiction | 27 |
| October 1967 |
|
Voices from the Sky: Previews of the Coming Space Age | Pyramid Books | Nonfiction | 31 |
| 1969 |
|
Voices from the Sky | Mayflower | Nonfiction | 30 |
| 1969 |
|
Voices from the Sky | Mayflower | Nonfiction | 30 |
| January 1971 |
|
Voices from the Sky: Previews of the Coming Space Age | Pyramid Books | Nonfiction | 31 |
| February 1980 |
|
Voices from the Sky | Pocket Books | Nonfiction | 35 |