Letter (Astounding, December 1949): More Than the Extra 1.5 Mi. Per Sec. Would Be Built Up by the Fall from Earth's Orbit to Venus' Under Solar Gravity.
| First published | December 1949 |
|---|---|
| Type | Essay |
Publications (1)
| Date | Publication | Publisher | Type | Page |
|---|---|---|---|---|
| December 1949 | Astounding Science Fiction, December 1949 | Street & Smith Publications, Inc. | MAGAZINE | 112|112.1 |