Most Popular Sci-Fi TV Series/TV Mini-Series
1. Star Trek: Discovery (2017– )
TV-MA | 60 min | Sci-Fi
Ten years before Kirk, Spock and the Enterprise, the USS Discovery discovers new worlds and lifeforms as one Starfleet officer learns to understand all things alien.
4. The Flash (2014– )
TV-PG | 43 min | Action, Adventure, Drama
After being struck by lightning, Barry Allen wakes up from his coma to discover he's been given the power of super speed, becoming the Flash, fighting crime in Central City.
6. Arrow (2012– )
TV-14 | 42 min | Action, Adventure, Crime
Spoiled billionaire playboy Oliver Queen is missing and presumed dead when his yacht is lost at sea. He returns five years later a changed man, determined to clean up the city as a hooded vigilante armed with a bow.
13. Runaways (2017– )
60 min | Action, Drama, Sci-Fi | Filming
After discovering their parents are super-villains in disguise, a group of teenagers band together to run away from their homes in order to atone for their parents' actions and to discover the secrets of their origins.
15. Legends of Tomorrow (2016– )
TV-14 | 42 min | Action, Adventure, Drama
Focuses on time-traveling rogue Rip Hunter, who has to recruit a rag-tag team of heroes and villains to help prevent an apocalypse that could impact not only Earth, but all of time.
17. The X-Files (1993– )
TV-14 | 45 min | Drama, Mystery, Sci-Fi
Two FBI agents, Fox Mulder the believer and Dana Scully the skeptic, investigate the strange and unexplained, while hidden forces work to impede their efforts.
20. The 100 (2014– )
TV-14 | 43 min | Drama, Mystery, Sci-Fi
Set ninety-seven years after a nuclear war has destroyed civilization, when a spaceship housing humanity's lone survivors sends one hundred juvenile delinquents back to Earth, in hopes of possibly re-populating the planet.
21. Westworld (2016– )
TV-MA | 60 min | Drama, Mystery, Sci-Fi
Set at the intersection of the near future and the reimagined past, explore a world in which every human appetite, no matter how noble or depraved, can be indulged without consequence.
25. Z Nation (2014– )
TV-14 | 44 min | Action, Comedy, Drama
Three years after the zombie virus has gutted the United States of America a team of everyday heroes must transport the only known survivor of the plague from New York to California, where the last functioning viral lab waits for his blood.
26. The Last Man on Earth (2015– )
TV-14 | 22 min | Action, Comedy, Drama
Almost two years after a virus wiped out most of the human race, Phil Miller only wishes for some company, but soon gets more than he bargained for when that company shows up in the form of other survivors.
28. Doctor Who (2005– )
TV-PG | 45 min | Adventure, Drama, Family
The further adventures of the time travelling alien adventurer, a Time Lord/Lady known as the Doctor who can change appearance and gender, and his/her companions.
30. The Expanse (2015– )
TV-14 | 60 min | Drama, Mystery, Sci-Fi
A police detective in the asteroid belt, the first officer of an interplanetary ice freighter and an earth-bound United Nations executive slowly discover a vast conspiracy that threatens the Earth's rebellious colony on the asteroid belt.
32. Smallville (2001–2011)
TV-PG | 60 min | Adventure, Drama, Romance
A young Clark Kent struggles to find his place in the world as he learns to harness his alien powers for good and deals with the typical troubles of teenage life in Smallville, Kansas.
34. Dark Matter (2015–2017)
TV-14 | 42 min | Drama, Sci-Fi, Thriller
In the dystopian 27th century, six people wake up on a deserted spaceship with no memory of who they are or what they're doing there. They reluctantly team up and set off to find answers with the help of a female android.
35. Sense8 (2015–2018)
TV-MA | 60 min | Drama, Mystery, Sci-Fi
A group of people around the world are suddenly linked mentally, and must find a way to survive being hunted by those who see them as a threat to the world's order.
37. Star Trek: The Next Generation (1987–1994)
TV-PG | 44 min | Action, Adventure, Mystery
Set decades after Captain Kirk's five-year mission, a new generation of Starfleet officers set off in a new Enterprise on their own mission to go where no one has gone before.
38. Blood Drive (2017)
TV-MA | 60 min | Action, Adventure, Comedy
Set in a near-dystopian future, the series features a former cop, who is forced to take part in a death race in which cars run on human blood as fuel.
40. Star Trek: Voyager (1995–2001)
TV-PG | 44 min | Action, Adventure, Sci-Fi
Pulled to the far side of the galaxy, where the Federation is seventy-five years away at maximum warp speed, a Starfleet ship must cooperate with Maquis rebels to find a way home.
42. Person of Interest (2011–2016)
TV-14 | 43 min | Action, Crime, Drama
An ex-assassin and a wealthy programmer save lives via a surveillance AI that sends them the identities of civilians involved in impending crimes. However, the details of the crimes--including the civilians' roles--are left a mystery.
46. Jessica Jones (2015– )
TV-MA | 56 min | Action, Crime, Drama
Following the tragic end of her brief superhero career, Jessica Jones tries to rebuild her life as a private investigator, dealing with cases involving people with remarkable abilities in New York City.
49. Star Trek: Deep Space Nine (1993–1999)
TV-PG | 45 min | Action, Adventure, Drama
In the vicinity of the liberated planet of Bajor, the Federation space station Deep Space Nine guards the opening of a stable wormhole to the far side of the galaxy.
50. Salvation (2017– )
TV-14 | 43 min | Drama, Sci-Fi, Thriller
An MIT grad student and a tech superstar bring a low-level Pentagon official a staggering discovery--that an asteroid is just six months away from colliding with Earth.