This rather famous paper appears in at least two somewhat different versions.
The one in Voices from the Sky (1965) reprints the original from Wireless World for October 1945. It contains four figures and two equations in the text as well as a list of seven references in the the end. A facsimile is reprinted in Ascent to Orbit (1984)
The version in Greetings, Carbon-Based Bipeds! (1999) is much simplified, omitting all technical details. Apart from that, the text itself is only very slightly revised. Clarke calls this "my final - I hope - version".
The one in Voices from the Sky (1965) reprints the original from Wireless World for October 1945. It contains four figures and two equations in the text as well as a list of seven references in the the end. A facsimile is reprinted in Ascent to Orbit (1984)
The version in Greetings, Carbon-Based Bipeds! (1999) is much simplified, omitting all technical details. Apart from that, the text itself is only very slightly revised. Clarke calls this "my final - I hope - version".
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| September 1965 |
|
Voices from the Sky: Previews of the Coming Space Age | Harper & Row | Nonfiction | 233 |
| 1966 |
|
Voices from the Sky: Previews of the Coming Space Age | Gollancz | Nonfiction | 233 |
| October 1967 |
|
Voices from the Sky: Previews of the Coming Space Age | Pyramid Books | Nonfiction | 197 |
| 1969 |
|
Voices from the Sky | Mayflower | Nonfiction | 191 |
| 1969 |
|
Voices from the Sky | Mayflower | Nonfiction | 191 |
| January 1971 |
|
Voices from the Sky: Previews of the Coming Space Age | Pyramid Books | Nonfiction | 197 |
| February 1980 |
|
Voices from the Sky | Pocket Books | Nonfiction | 230 |
| 1999 |
|
Greetings, Carbon-Based Bipeds!: A Vision of the 20th Century As It Happened | Voyager | Nonfiction | 19 |
| August 1999 |
|
Greetings, Carbon-Based Bipeds!: Collected Essays 1934-1998 | St. Martin's Press | Nonfiction | 19 |