The 170th episode of Arrow, a modern-day reboot of DC Comics’ Green Arrow superhero starring Stephen Amell, airs on the CW. This is the series finale.
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The 149th episode of Arrow, a modern-day reboot of DC Comics’ Green Arrow superhero starring Stephen Amell, airs on the CW.
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Streaming service CBS All Access releases the 13th episode of Star Trek: Discovery, concluding an extended story arc taking place in Star Trek’s “Mirror Universe”. Michelle Yeoh and Rekha Sharma (Battlestar Galactica) guest star. 
The CW airs the second episode of Legends Of Tomorrow, starring Arthur Darvill (Doctor Who), Brandon Routh (Superman Returns), Caity Lotz (Mad Men), and Victor Garber (Alias). Neal McDonough makes his first appearance as recurring villain Damien Darhk, and Casper Crump guest stars as Vandal Savage.
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The 57th episode of Arrow, a modern-day reboot of DC Comics’ Green Arrow superhero starring Stephen Amell, airs on the CW. Brandon Routh (Superman Returns) guest stars.
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Big Finish Productions releases the 156th Doctor Who audio drama in its main monthly range, starring Colin Baker and Lisa Greenwood.
Sci-Fi Channel airs the 46th episode of Ronald D. Moore’s re-imagining of Battlestar Galactica.
BBC Radio 7 airs the fifth episode of a new series of Doctor Who audio dramas, starring Paul McGann as the eighth Doctor, with Sheridan Smith as Lucie Miller. The new eighth Doctor adventures are produced by, and will later get a CD release from, Big Finish Productions.
Sci-Fi channel airs the fourth episode of Ronald D. Moore’s re-imagining of Battlestar Galactica.
The 86th episode of the prequel spinoff Star Trek: Enterprise airs on UPN. Jeffrey Combs guest stars.
Sci-Fi Channel airs the 11th episode of Stargate Atlantis.
The 165th episode of Stargate SG-1 airs on the Sci-Fi Channel, starring Richard Dean Anderson, Amanda Tapping, Michael Shanks, and Christopher Judge. Claudia Black (Farscape) guest stars.
Big Finish Productions releases the second U.N.I.T. audio drama, a Doctor Who audio spinoff.
The 100th episode of Gene Roddenberry’s Earth: Final Conflict, airs in syndication, starring Jayne Heitmeyer, Von Flores, Melinda Deines, Guylaine St. Onge, and Alan Van Sprang. Rachel McAdams (Mean Girls, The Notebook, Doctor Strange) guest stars.
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Actor Stratford Johns, a familiar face to British TV audiences for more than four decades, dies at the age of 76. Among his notable genre appearances were Peter Davison’s second Doctor Who story, Four To Doomsday, and one of the final Blake’s 7 episodes, Games; Mr. Johns also appeared in such staples of BBC-TV’s golden era as Z Cars and Softly Softly.
Sci-Fi Channel premieres the 22nd episode of Farscape. Wayne Pygram guest stars as Scorpius in the first season finale.
Pay cable channel Showtime premieres the 59th episode of Stargate SG-1. Dom DeLuise (Blazing Saddles, The Cannonball Run) guest stars.
Sci-Fi Channel airs the 86th episode of the science fiction series Sliders, starring Cleavant Derricks, Kari Wuhrer, Robert Floyd, and Tembi Locke. Peter Jurasik (Babylon 5) guest stars.
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Showtime airs the 109th episode of The Outer Limits, a revival of the 1960s science fiction anthology series. Stacy Keach and John de Lancie (Star Trek: The Next Generation) guest star.
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Cable channel TNT premieres the 90th episode of J. Michael Straczynski’s science fiction series Babylon 5.
RCA/Victor releases an expanded edition of John Williams‘ soundtrack to the Star Wars sequel The Empire Strikes Back; the release is timed to coincide with the re-release of the movie in “Special Edition” form.
The 35th episode of the supernatural crime series Forever Knight airs in syndication, starring Geraint Wyn-Davies, Catherine Disher, Nigel Bennett, and John Kapelos. Lisa Ryder (Andromeda) guest stars.
The 34th episode of the science fiction crime drama Super Force is broadcast in syndication in North America, starring Ken Olandt, Larry B. Scott, and Patrick Macnee (The Avengers).
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The week-long national syndication window opens for the 85th episode of Star Trek: The Next Generation. This episode introduces the Cardassians and begins to lay the groundwork for future Star Trek spinoff Deep Space Nine. Bob Gunton guest stars.
The 38th episode of the horror anthology series Freddy’s Nightmares is broadcast in syndication in North America, hosted by Robert Englund in character as Freddy Krueger.
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The 12th episode of the syndicated Alexander and Ilya Salkind-produced Superboy series, starring John Haymes Newton and Stacy Haiduk, airs. The episode is written by Eisner Award-winning comic writers Mike Carlin (currently editor of DC’s Superman comics) and Andy Helfer.
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The 54th episode of a revival of Rod Serling’s The Twilight Zone airs in syndication. Damir Andrei and Deborah Raffin star in an episode written by J. Michael Straczynski (Babylon 5, Jeremiah, Sense8).
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73 seconds after liftoff, Space Shuttle Challenger explodes when a rubber O-ring designed to be a tight seal between solid rocket booster segments allows flames from the booster to breach the shuttle’s external fuel tank, causing the tank’s highly flammable contents to ignite. The shuttle is destroyed with all hands aboard. Later analysis reveals that frigid cold temperatures in the nights leading up to the launch allowed the booster’s O-rings to become brittle enough to break – a possibility that NASA had been warned of by engineers at Morton-Thiokol, the contractor responsible for the solid rocket boosters.
Lost in the explosion are Commander Francis R. Scobee, Pilot Michael Smith, mission specialists Judy Resnik, Ellison Onizuka and Ronald McNair, and payload specialists Gregory Jarvis and Christa McAuliffe, the highly-publicized first “teacher in space.”
The Space Shuttle program is grounded for over two years during an investigation and an extensive review of safety and launch procedures.
The tenth episode of Chocky airs on Thames Television. Prentis Hancock (Space: 1999) guest stars.
The 14th episode of the science fiction series The Powers Of Matthew Star airs on NBC, starring Peter Barton and Louis Gossett Jr. Joel Brooks (My Sister Sam) guest stars.
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BBC1 premieres the 30th episode of Terry Nation’s science fiction series Blake’s 7.
The 15th episode of Glen A. Larson’s science fiction series Battlestar Galactica airs on ABC. Fred Astaire guest stars. 
The fourth episode of Watermark Radio’s syndicated sci-fi radio drama Alien Worlds is broadcast across the U.S., created by Lee Hensen and starring Roger Dressler, Linda Gary, and Corey Burton (Star Wars: The Clone Wars). Francis Bay guest stars.
With a newly-awarded NASA contract in hand, Rockwell International begins the process of converting Space Shuttle Structural Test Article 099 into the Orbiter Vehicle 099, later to be christened Space Shuttle Challenger. A process originally envisioned for the test vehicle Enterprise, it is deemed more cost-effective and faster to upgrade STA-099 into OV-099. The first order of business is the construction of a new crew module, since the corresponding section of STA-099 was never actually intended to house human beings.
The 473rd episode of Doctor Who airs on BBC1.
This timeline entry leads to an entry covering this entire Doctor Who serial; there are plans to write new episodic entries in the future. You can support this effort!
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The 51st episode of The Bionic Woman, starring Lindsay Wagner and Richard Anderson, airs on NBC. Jim McMullan (Beyond Westworld) and Frank Aletter (It’s About Time) guest star. This episode’s music marks one of the first uses of an electrical instrument called the Blaster Beam in a film scoring context; that instrument will become much more widely known when it’s used in the soundtracks of such films as Star Trek: The Motion Picture and The Black Hole over a year later.
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The third episode of The Bionic Woman, starring Lindsay Wagner and Richard Anderson, airs on ABC. Andy Griffith guest stars.
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The 101st episode of Irwin Allen’s adventure series Voyage To The Bottom Of The Sea airs on ABC, starring Richard Basehart and David Hedison. Paul Mantee guest stars.
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The 147th episode of Doctor Who airs on the BBC, embroiling the new Doctor, Jamie, Ben and Polly in a plot involving an underwater city and the Fish People.
This timeline entry leads to an entry covering this entire Doctor Who serial; there are plans to write new episodic entries in the future. You can support this effort!
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British broadcaster ABC airs the 107th episode of the spy-fi series The Avengers, starring Patrick Macnee and Diana Rigg. Geoffrey Bayldon guest stars.
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The 21st episode of the spy-fi series Adam Adamant Lives! airs on BBC1, starring Gerald Harper and Juliet Harmer. Along with much of the rest of the second season, this episode is missing from the BBC’s archives.
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The fourth episode of Sydney Newman’s spy series The Avengers, starring Ian Hendry and Patrick Macnee, airs on UK broadcaster ABC. This episode is now missing from the archives, but will be recreated in audio form in the 21st century by Big Finish Productions.
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The 39th episode of the syndicated science fiction Science Fiction Theatre airs on stations across the U.S. Hosted by Truman Bradley, the episode stars Skip Homeier and Beverly Garland, and concludes the show’s first season. For budgetary reasons, this is the final episode filmed in color.
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