Letter (Astounding, April 1940): Well—You Can't Characterize a Light-Year, Anyway. When Men Do Travel Such Distances, They'll Do It Casually Because the Mind Can't Handle It Otherwise.
| First published | April 1940 |
|---|---|
| Type | Essay |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| April 1940 |
|
Astounding Science-Fiction, April 1940 | Street & Smith Publications, Inc. | MAGAZINE | 160|160.1 |