The 24th 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 is no longer in the archives and may be lost.
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ABC airs the 85th episode of the supernatural anthology series One Step Beyond, hosted and directed by John Newland. Roger Delgado (Doctor Who) guest stars.
The 113th episode of Rod Serling’s The Twilight Zone airs on CBS. Steve Forrest and Jacqueline Scott star in an episode written by Serling.
British broadcaster ABC airs the 77th episode of the spy-fi series The Avengers, starring Patrick Macnee and Honor Blackman. 
The 17th episode of Doctor Who airs on the BBC. This is part four of the story now collectively known as 
NBC airs 
The tenth episode of Larry Cohen’s science fiction series The Invaders, starring Roy Thinnes and produced by Quinn Martin’s QM Productions, premieres on ABC. William Smithers (Peyton Place, Dallas), Michael Rennie (The Day The Earth Stood Still), and Dabney Coleman (9 To 5, WarGames) guest star.
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The 52nd 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.
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The European Space Agency’s unmanned Giotto space probe makes its closest approach to the nucleus of Halley’s Comet, coming within 400 miles of the comet’s core and taking unprecedented photos that help scientists refine their theories about cometary composition and formation. Giotto pays for the close encounter by taking a beating: its instruments register significant dust impacts, and one impact event jars the spacecraft off of its axis, coming dangerously close to breaking Giotto’s radio contact with Earth and forcing the vehicle to stabilize itself with thrusters. After its encounter with the comet, Giotto falls into a long, looping orbit around Earth, where it will be reactivated to study another comet years later.
The week-long national syndication window opens for 
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NBC airs the 26th episode of Donald Bellisario’s science fiction series Quantum Leap, starring Scott Bakula and Dean Stockwell. Shari Headley guest stars.
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The movie-length first episode of RoboCop: The Series premieres in syndication in the U.S., starring Richard Eden, Yvette Nipar, Blu Mankuma, and Andrea Roth. Based loosely on characters from the 1987 movie of the same name, the pilot is based on an unused script for a potential movie sequel, but the series has a decidedly more family-friendly, less gory tone. Cliff De Young guest stars as Dr. Cray Z. Mollardo.
The week-long national syndication window opens for 
An American astronaut lifts off aboard a Russian Soyuz spacecraft for the first time ever with the launch of Soyuz TM-21, a mission to the Mir space station. Cosmonauts Vladimir Dezhurov and Gennady Strekalov are joined by astronaut Norman Thagard aboard Mir, where they remain for 115 days. During that time, they witness the arrival of the Spektr module, a new addition to the station, and they ultimately return to Earth aboard space shuttle Atlantis in July 1995; Soyuz TM-21 remains at the station, where a future Mir crew uses it to return to Earth. During the Atlantis mission, a new record is set for the number of humans in space, as the station and shuttle crews add up to 13 people in orbit at once.
Showtime airs the 53rd episode of The Outer Limits, a revival of the 1960s science fiction anthology series. 
Fox airs the 41st episode of Tracy Torme’s alternate-universe science fiction series Sliders, starring Jerry O’Connell, Sabrina Lloyd, Cleavant Derricks, and Kari Wuhrer. Dawnn Lewis (Star Trek: Lower Decks) guest stars.
NASA’s NEAR (Near Earth Asteroid Rendezvous) unmanned spacecraft is officially renamed NEAR-Shoemaker, honoring Eugene Shoemaker, discoverer of multiple asteroids and comets, who died in 1997. Shoemaker had also put his geology skills to use in training Apollo astronauts after a medical diagnosis prevented him from joining the astronaut corps himself. NEAR-Shoemaker continues to orbit asteroid 433 Eros.
The fifth episode of the science fiction comedy series The Strangerers is broadcast on Sky One, created and written by Rob Grant (Red Dwarf), starring Mark Williams and Jack Docherty. Tracy-Ann Oberman guest stars.
The 130th episode of Stargate SG-1 airs on the Sci-Fi Channel, starring Richard Dean Anderson, Amanda Tapping, Christopher Judge, and Corin Nemec.
ABC airs the 
The European Space Agency’s unmanned Mars Trace Gas Orbiter, nicknamed ExoMars, lifts off via a Russian Proton rocket on a course for Mars. Carrying a small lander named Schiaparelli (named after the Italian astronomer who was instrumental in early mapping of Martian surface features via telescope), ExoMars is scheduled to arrive at the red planet in October 2016, deliver the Schiaparelli lander, and then enter orbit to search for traces and origins of methane in the Martian atmosphere, to determine if the presence of that gas – usually associated with biological activity on Earth – is geochemical in nature, or is derived from another source. Plans then call for ExoMars to join the fleet of artificial satellites relaying communications from current and future Mars-exploring rovers and landers to Earth through the 2020s.
The CW airs the 30th episode of Legends Of Tomorrow, starring Arthur Darvill, Brandon Routh, Caity Lotz and Victor Garber.