The 20th episode of ABC’s science fiction anthology series, Tales Of Tomorrow, airs on ABC, with each episode’s opening titles proclaiming that the series is produced “in cooperation with the Science-Fiction League of America”, a collective of sci-fi writers including Isaac Asimov and Theodore Sturgeon among its members. This episode, based on a story by Frederic Brown, stars Phyllis Kirk.
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British broadcaster ABC airs the 73rd episode of the spy-fi series The Avengers, starring Patrick Macnee and Honor Blackman. 
The 13th episode of Doctor Who airs on the BBC. The Brink Of Disaster is part two of the story now collectively known as 
NBC airs 
The 23rd episode of Irwin Allen’s adventure series Voyage To The Bottom Of The Sea airs on ABC, starring Richard Basehart and David Hedison. Simon Scott guest stars.
The 50th episode of Irwin Allen’s science fiction series Lost In Space premieres on CBS, starring Guy Williams, June Lockhart, and Jonathan Harris.
The 
ABC airs the 47th episode of Irwin Allen’s sci-fi series Land Of The Giants, starring Gary Conway, Don Matheson, Deanna Lund, and Don Marshall. 
The 
The 55th episode of The Six Million Dollar Man is broadcast on ABC, starring Lee Majors and Richard Anderson. Cathy Rigby, Terry Kiser (A Weekend At Bernie’s), and Lindsay Wagner guest star.
Space Shuttle Enterprise, mated to the heavily-modified Boeing 747 Shuttle Carrier Aircraft (SCA) for the first time, undergoes three “taxi tests” to enusre the structural stability of the two-vehicle combination on the runway before they ever take off. This is the first phase of a series of tests that will culminate, later in 1977, in a series of brief unpowered flights and landing tests using the Enterprise, verifying the shuttle’s gliding aerodynamics.
Cashing in on gamers’ desire to fly down a tightly-enclosed trench blowing away enemy spaceships, Cinematronics introduces the “Vectorbeam”-powered arcade game 
The 49th episode of the live-action series based on Marvel’s comic The Incredible Hulk airs on CBS, starring Bill Bixby, Jack Colvin, and Lou Ferrigno.
At Rockwell International, a spare Space Shuttle crew module is assembled alongside components intended for the orbiters Discovery and Atlantis, and though the spare isn’t intended for a specific shuttle yet to be built, it will find a purpose in the wake of the 1986 Challenger disaster: the spare crew module will become one of many completed shuttle spares that will eventually be assembled in the late 1980s as the Space Shuttle Endeavour, Challenger’s replacement and the last space shuttle constructed.
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The week-long national syndication window opens for 
The 
The eighth episode of a modern reboot of Dan Curtis’ gothic horror series Dark Shadows is broadcast on NBC, starring Ben Cross, Lysette Anthony, Roy Thinnes (The Invaders), and Jean Simmons. Adrian Paul (Highlander) guest stars.
The week-long national syndication window opens for 
The week-long national syndication window opens for 
The 12th episode of Roger Price’s rebooted science fiction series The Tomorrow People is broadcast on ITV in the U.K. (and will appear later on Nickelodeon in North America), starring Kristian Schmid, Naomie Harris (Spyfall), and Christian Tessier. Christopher Benjamin (Doctor Who) guest stars.
The week-long national syndication window opens for 
The 108th episode of Chris Carter’s modern-day science fiction series The X-Files airs on Fox, starring Gillian Anderson and David Duchovny. Kristin Lehman guest stars.
The 37th episode of Gene Roddenberry’s Earth: Final Conflict, airs in syndication, starring Robert Leeshock, Lisa Howard, Von Flores, and Richard Chevolleau.
The week-long national syndication window opens for the 
The 14th episode of Highlander: The Raven, starring Amanda Gracen and Paul Johannson, airs in syndication; the series is a spinoff from Highlander: The Series. Lysette Anthony (Krull) and Glynis Barber (Blake’s 7) guest star.