The 19th 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 which will later be adapted for an episode of The Twilight Zone, stars William Redfield.
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The 19th episode of the military anthology series West Point is broadcast on CBS in the United States. This episode is an early TV script written by future Star Trek creator Gene Roddenberry, one of the series’ staff writers. 
NASA and the United States Weather Bureau launch the fourth experimental TIROS weather satellite, TIROS-4. Further refinements to the basic TIROS satellite system are made, and after TIROS-3’s discovery of a hurricane in the Atlantic well before it his the US, new enhancements are introduced specifically for early hurricane detection. TIROS-4 remains in orbit for less than six months.
The 142nd episode of Rod Serling’s The Twilight Zone airs on CBS. Unusually for The Twilight Zone, this is an instance of a complete film presented as an episode, with only minor edits and Serling’s customary introduction added.
British broadcaster ABC airs the 72nd episode of the spy-fi series The Avengers, starring Patrick Macnee and Honor Blackman. 
The 12th episode of Doctor Who airs on the BBC. This is the first part of the story now collectively known as 
NBC airs 
The 22nd episode of Irwin Allen’s adventure series Voyage To The Bottom Of The Sea airs on ABC, starring Richard Basehart and David Hedison. Barry Atwater and Gene Dynarski guest star.
The 49th episode of Irwin Allen’s science fiction series Lost In Space premieres on CBS, starring Guy Williams, June Lockhart, and Jonathan Harris.
Starring Charlton Heston and Roddy McDowall, 20th Century Fox’s big-screen release of Planet Of The Apes quickly becomes one of 1968’s movie success stories, and easily one of the year’s two most influential genre films. Propelled into the future aboard a spacecraft from Earth, a trio of astronauts find themselves on a world ruled by sentient apes with no love of humanity whatsoever – for humanity nearly destroyed their world. The studio almost immediately sets the wheels in motion for a sequel. 
The 
The eighth and final episode of children’s fantasy series The Owl Service is broadcast by British broadcast Granada Television. The series is adapted by novelist Alan Garner from his own novel. 
The 
The 
The 54th episode of The Six Million Dollar Man is broadcast on ABC, starring Lee Majors and Richard Anderson. Farrah Fawcett Majors guest stars.
Fairchild rebrands its pioneering Video Entertainment System console as the much more memorable Fairchild Channel F. This is the name by which the console will be most commonly known in the future, and a name which it retains even after Fairchild sells its inventory and interest in Channel F to electronic toolmaker Zircon in 1979. Many later historical accounts associate the Channel F rebranding with competition and market confusion from Atari’s Video Computer System, but in fact the VCS won’t debut until much later in the year.
The 48th 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.
The 
Atari releases 
The 
Delayed many months during the investigation into the causes of the Soyuz T-10a near-disaster in 1983, Soyuz T-10 lifts off from the Soviet Union. Cosmonauts Leonid Kizim, Vladimir Solovyov and Oleg Atkov take up residence on space station Salyut 7 for a 236-day stay – the longest duration crew of the entire Salyut space station program – during which they have to conduct repairs to the station both inside and outside in a series of spacewalks. Left unoccupied months longer than expected, the station has powered down and must be reactivated, a process taking nearly ten days. A fuel line break on the exterior of the station must be repaired as well. The crew remains aboard Salyut 7 through October.
The 
The week-long national syndication window opens for 
The sevenh 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 11th 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