 Foundation and Earth
| 3.76 | 123 reads |
 Foundation's Edge
| 3.87 | 171 reads |
 Second Foundation
| 4.12 | 306 reads |
 Foundation and Empire
| 3.98 | 343 reads |
 Foundation
| 3.99 | 725 reads |
 Rendezvous with Rama
| 3.93 | 309 reads |
 Rama Revealed
| 3.37 | 26 reads |
 The Garden of Rama
| 3.13 | 36 reads |
 Rama II
| 3.33 | 55 reads |
 Shipstar
| 3.75 | 5 reads |
 Bowl of heaven
| 3.14 | 9 reads |
 Old Man's War
| 4.19 | 468 reads |
 Aurora
| 3.75 | 113 reads |
 Seveneves
| 3.92 | 316 reads |
 Hull Zero Three
| 3.45 | 20 reads |
