Please do not merge with the essay from The Lost Worlds of 2001 (1972). Completely different pieces.
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| January 1972 |
|
Report on Planet Three and Other Speculations | Harper & Row | Nonfiction | 238 |
| 1973 |
|
Report on Planet Three and Other Speculations | Corgi Books / Transworld Publishers | Nonfiction | 244 |
| 1975 |
|
Report on Planet Three and Other Speculations | Corgi | Nonfiction | 244 |
| June 1982 |
|
Report on Planet Three and Other Speculations | Signet / New American Library | Nonfiction | 214 |
| 1984 |
|
Report on Planet Three and Other Speculations | Pan Books | Nonfiction | 244 |
| 1985 |
|
Berichte über einen kleinen blauen Planeten | Bastei Lübbe | Nonfiction | 268 |
| March 1985 | Report on Planet Three and Other Speculations | Berkley Books | Nonfiction | 234 | |
| July 1993 |
|
By Space Possessed: Essays on the Exploration of Space | Gollancz | Nonfiction | 146 |
| 1999 |
|
Greetings, Carbon-Based Bipeds!: A Vision of the 20th Century As It Happened | Voyager | Nonfiction | 259 |
| August 1999 |
|
Greetings, Carbon-Based Bipeds!: Collected Essays 1934-1998 | St. Martin's Press | Nonfiction | 259 |