Expansion of the novella of the same name, first appearance in Amazing Stories in July 1959
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1961 |
|
Collision Course | Avalon Books | Novel | |
| 1961 |
|
Collision Course / The Nemesis from Terra | Ace Books | Omnibus | 5 |
| February 1977 |
|
Collision Course | Ace Books | Novel | 1 |
| May 1982 |
|
Collision Course | Ace Books | Novel | 1 |
| October 1988 |
|
Collision Course | Tor | Novel | 1 |
| September 2011 |
|
Collision Course | Gateway / Orion | Novel | |
| June 2018 |
|
Robert Silverberg: The Ace Years, Part Three | Armchair Fiction | Omnibus | 142 |