Since time immemorial, mankind has been looking up at the stars and dreaming, but it was only centuries ago that we started turning those dreams into fiction. And what remarkable dreams they are—dreams of distant worlds, unearthly creatures, parallel universes, artificial intelligence, and so much more. Today, we call those dreams science fiction.
Science fiction’s earliest inklings began in the mid-1600s, when Johannes Kepler and Francis Godwin wrote pioneering stories about voyages to the moon. Some scholars argue that science fiction as we now understand it was truly born in 1818, when Mary Shelley published Frankenstein, the first novel of its kind whose events are explained by science, not mysticism or miracles. Now, two centuries later, sci-fi is a sprawling and lucrative multimedia genre with countless subgenres, such as dystopian fiction, postapocalyptic fiction, and climate fiction, to name just a few. It’s also remarkably porous, allowing for some overlap with genres like fantasy and horror.
Sci-fi brings out the best in our imaginations and evokes a sense of wonder, but it also inspires a spirit of questioning. Through the enduring themes of sci-fi, we can examine the zeitgeist’s cultural context and ethical questions. Our favorite works in the genre make good on this promise, meditating on everything from identity to oppression to morality. As the Nobel Prize-winning novelist Doris Lessing said, “Science fiction is some of the best social fiction of our time.”
Over two years ago, we published a version of this list featuring 50 books. But why stop at 50? Now, as part of our latest Summer Fiction Week, we’ve cast a wider net and expanded the list to 75 titles. Choosing the 75 best science fiction books of all time wasn’t easy, so to get the job done, we had to establish some guardrails. Though we assessed single installments as representatives of their series, we limited the list to one book per author. We also emphasized books that brought something new and innovative to the genre—to borrow a great sci-fi turn of phrase, books that “boldly go where no one has gone before.”
Now, in ranked order, here are the best science fiction books of all time.
#1
181 • 2,768 Readers • 353 pages • 3.8
#2
#3
1950 • 963 Readers • 182 pages • 4
#4
#5
1979 • 1,050 Readers • 292 pages • 4.4
#6
#4 of 9 in Hainish Cycle
1969 • 1,401 Readers • 267 pages • 4
#7
2000 • 1,899 Readers • 282 pages • 3.8
#8
2008 • 950 Readers • 208 pages • 4.3
#9
2014 • 1,986 Readers • 333 pages • 4.1
#10
1968 • 1,825 Readers • 223 pages • 3.9
#11
#1 of 4 in Remembrance of Earth's Past
2006 • 3,235 Readers • 400 pages • 3.9
#12
1949 • 6,167 Readers • 328 pages • 4.2
#13
2018 • 231 Readers • 144 pages • 3.6
#14
1900 • 3,228 Readers • 332 pages • 3.9
#15
2010 • 264 Readers • 257 pages • 3.3
#16
#17
1953 • 747 Readers • 212 pages • 4
#18
1972 • 576 Readers • 226 pages • 4
#19
1959 • 573 Readers • 322 pages • 4
#20
#1 of 1 in Canopus in Argos: Archives Series,
1979 • 12 Readers • 364 pages • 3
#21
#22
#23
#24
#25
1992 • 90 Readers • 416 pages • 3.9
#26
2017 • 135 Readers • 288 pages • 3.6
#27
2009 • 976 Readers • 1,184 pages • 3.7
#28
#29
#30
2023 • 175 Readers • 380 pages • 3.6
#31
1978 • 1,667 Readers • 1,553 pages • 4.2
#32
#33
#34
2009 • 592 Readers • 336 pages • 3.9
#35
2015 • 166 Readers • 432 pages • 3.4
#36
1992 • 215 Readers • 3.4
#37
1979 • 51 Readers • 254 pages • 3.6
#38
#1 of 4 in Wayfarers
2014 • 1,590 Readers • 423 pages • 4.1
#39
2000 • 171 Readers • 3.3
#40
2021 • 4,072 Readers • 496 pages • 4.4
#41
#1 of 2 in St. Leibowitz
1959 • 668 Readers • 334 pages • 3.9
#42
#1 of 6 in The Hitchhiker's Guide to the Galaxy
1979 • 3,862 Readers • 215 pages • 4.2
#43
#44
1955 • 404 Readers • 278 pages • 3.8
#45
#46
2003 • 433 Readers • 464 pages • 4.1
#47
2017 • 299 Readers • 351 pages • 3.9
#48
43 Readers • 4.5
#49
1894 • 1,212 Readers • 144 pages • 3.7
#50
#51
1966 • 614 Readers • 288 pages • 3.8
#52
1962 • 1,506 Readers • 149 pages • 3.9
#53
1961 • 747 Readers • 222 pages • 3.8
#54
#1 of 3 in Children of Time
2015 • 1,713 Readers • 600 pages • 4.3
#55
#56
2020 • 45 Readers • 3.4
#57
2019 • 2,497 Readers • 223 pages • 3.9
#58
1967 • 258 Readers • 303 pages • 3.7
#59
#2 of 5 in The Book of the New Sun
1981 • 120 Readers • 303 pages • 4.1
#60
#62
#63
1949 • 14 Readers • 205 pages • 3
#64
#65
1963 • 161 Readers • 236 pages • 4.1
#66
2000 • 180 Readers • 304 pages • 3.7
#67
1985 • 640 Readers • 453 pages • 4.1
#68
1937 • 129 Readers • 272 pages • 3.8
#69
1992 • 1,584 Readers • 448 pages • 3.9
#70
2000 • 71 Readers • 356 pages • 4
#71
2020 • 24 Readers • 4.5
#72
2024 • 149 Readers • 336 pages • 4.2
#73
2012 • 760 Readers • 318 pages • 3.8
#74
#1 of 4 in Lady Astronaut Universe
2018 • 567 Readers • 384 pages • 4.1
#75
2021 • 376 Readers • 256 pages • 3.7