The 27th 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. Victoria Carroll and Don Marshall guest star.
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As it nears its closest approach to the planet Jupiter, NASA’s Voyager 1 space probe detects the first likely signs of a ring system around Jupiter’s equatorial region. Barely visible until Voyager 1 is behind the planet and can see them through scattered sunlight, the rings are only about 20 miles thick, but are over 150,000 miles in diameter. The lead time between Voyager 1’s visit and Voyager 2’s later flyby allows ground controllers to plan a better observation campaign for Voyager 1’s sister ship, and the rings are observed in more detail by the later Galileo and New Horizons missions.
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The unmanned NASA/JPL space probe Voyager 1 makes its closest approach to the giant planet Jupiter, a little over 200,000 miles away. While Voyager’s higher-resolution cameras trump any of the Pioneer images of Jupiter, the real revelation proves to be Jupiter’s four largest moons, revealing a smooth-but-cracked icy surface on Europa, craters on Ganymede and Callisto, and the colorful mountains of Io, whose biggest secret goes undiscovered until a few days after Voyager 1’s closest flyby.
The sixth episode of the series Salvage 1 airs on ABC, starring Andy Griffith, Joel Higgins (Silver Spoons), and Trish Stewart. Richard Jaeckel (Spenser For Hire) and Severn Darden (Battle For The Planet Of The Apes) guest star.
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Space Shuttle Columbia is officially rolled out of the Rockwell International construction facility in Palmdale, California, even though her outer “skin” is still unfinished – NASA technicians continue working on perfecting the first spaceworthy shuttle’s thermal tiles for much of the next year, delaying the first launch until sometime in 1981 (just another in a series of delays for a vehicle that had been intended to fly as early as 1977).
Following five years of research and development, Netherlands-based Philips Electronics demonstrates one of the earliest iterations of the compact audio disc, an optical disc in the now-familiar five-inch size which can be read by a CD player with a laser diode. Philips and Sony, who have been developing the new medium in parallel, will later join forces and create a standard for audio compact discs in 1980, introducing the CD as a consumer product in the early 1980s despite resistance from record companies with a vested interest in vinyl LPs (and only a begrudging acceptance of audio cassettes). In addition to higher audio fidelity and a more durable medium (an optical disc encased in a plastic shell, protecting the physical surface that is so often damaged with vinyl), the CD and its player can also compensate for any damage suffered by the disc through error correction.
JPL navigation engineer Linda Morabito, double-checking raw Voyager 1 images to ensure that the unmanned space probe is properly aligned for its encounter with Saturn in 1980, discovers the first evidence of active volcanoes on another body in Earth’s solar system: a plume of sulfur erupting over 150 feet above the surface of Jupiter’s moon Io. Scientists rush to check Voyager 1’s other Io images, and find that Voyager’s cameras caught more than half a dozen eruptions in the act.
The 53rd episode of Wonder Woman airs on CBS, starring Lynda Carter and Lyle Waggoner. Donnelly Rhodes (Battlestar Galactica) guest stars.
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ITV premieres the first episode of Roald Dahl’s anthology series Tales Of The Unexpected, hosted by the author himself and adapted from his short stories. José Ferrer and Cyril Luckham guest star.
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