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100 Best Sci-Fi Shows of All Time

Science fiction is often celebrated as a forward-thinking genre that promotes peace among all life forms. But deciding which sci-fi TV series is the best? That debate could start an intergalactic war.
To determine which series is the supreme ruler of the sci-fi genre, we took into consideration Tomatometer data culled from critics' reviews, plus a number of reputable "best of" lists, and sprinkled the effort with some editorial discretion, asking ourselves which shows have stood the test of time, inspired spin-offs and copycats, and even made their influence known on the big screen.
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Battlestar Galactica
Battlestar Galactica
1
Doctor Who
Doctor Who
2
The X-Files
The X-Files
3
Star Trek: The Next Generation
Star Trek: The Next Generation
4
Star Trek
Star Trek
5
Lost
Lost
6
Westworld
Westworld
7
Stranger Things
Stranger Things
8
Black Mirror
Black Mirror
9
The Expanse
The Expanse
10
Fringe
Fringe
11
Firefly
Firefly
12
The Twilight Zone
The Twilight Zone
13
Orphan Black
Orphan Black
14
The Outer Limits
The Outer Limits
15
Counterpart
Counterpart
16
Futurama
Futurama
17
Babylon 5
Babylon 5
18
Quantum Leap
Quantum Leap
19
Humans
Humans
20
The Prisoner
The Prisoner
21
Torchwood
Torchwood
22
The 100
The 100
23
Star Trek: Deep Space Nine
Star Trek: Deep Space Nine
24
Rick and Morty
Rick and Morty
25
Farscape
Farscape
26
Star Trek: Discovery
Star Trek: Discovery
27
Mystery Science Theater 3000: The Return
Mystery Science Theater 3000: The Return
28
Max Headroom
Max Headroom
29
The Rain
The Rain
30
Blake's 7
Blake's 7
31
Sense8
Sense8
32
The Man in the High Castle
The Man in the High Castle
33
Star Trek: Voyager
Star Trek: Voyager
34
Eureka
Eureka
35
Terminator: The Sarah Connor Chronicles
Terminator: The Sarah Connor Chronicles
36
Stargate SG-1
Stargate SG-1
37
Colony
Colony
38
The Quatermass Experiment
The Quatermass Experiment
39
Caprica
Caprica
40
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