After a year of redesign and reorganization, NASA resumes manned flights with Apollo 7, the first of the successful Apollo flights. An 11-day Earth-orbit shakedown cruise for the Apollo command/service module, the mission becomes contentious when the three-man crew – Wally Schirra, Walt Cunningham and Donn Eisele – is loaded down with a jam-packed mission plan. Worse, Schirra comes down with a cold which quickly spreads to his crewmates in the enclosed biosphere of the Apollo command module. The flight’s technical goals are met with flying colors, though the crew’s snippy responses to ground controllers keep them off the crew rotation for future Apollo flights.
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ABC broadcasts the fifth episode of the Filmation animated series Fantastic Voyage, based on the 
British broadcaster Thames Television airs the 132nd episode of the spy-fi series The Avengers, starring Patrick Macnee and Linda Thorson. 
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ABC airs the fourth episode of Irwin Allen’s sci-fi series Land Of The Giants, starring Gary Conway, Don Matheson, Deanna Lund, and Don Marshall. John Abbott and Lance LeGault guest star.
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The Soviet Union resumes its manned space program with the launch of cosmonaut Georgy Beregovoy aboard the redesigned Soyuz 3 vehicle. The unmanned Soyuz 2 is launched the day before to serve as a docking target for Soyuz 3, but while the two vehicles pass close to each other, no docking is achieved. Beregovoy successfully returns to Earth – the first Soyuz cosmonaut to do so – after four days in orbit.
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Cornell University student Richard Lovelace, working at the Cornell-funded Arecibo Radio Telescope in Puerto Rico, uses the massive telescope and its on-site computers to determine the rotational period of a pulsar discovered near the center of the Crab Nebula, approximately 6,500 light years from Earth. The position of the pulsar relative to the nebula strengthens the case for pulsars and (still hypothetical) neutron stars occurring at the heart of supernova remnants. The Crab Nebula pulsar had been discovered only three years earlier.
The Soviet Union launches an unmanned Soyuz 7K-L1 spacecraft, designated Zond 6, on a seven-day flight around the moon and back to Earth. Like Zond 5 before it, Zond 6 carries specimens of Earth animals and plants, but a rupture of the Soyuz pressure vessel results in these specimens being exposed to hard vacuum, resulting in instant death. Furthermore, the spacecraft opens and jettisons its parachutes too early, leaving it to slam into the ground at high speed. With continued glitches plaguing the Zond flights, Soviet mission planners aren’t confident enough in the 7K-L1 capsule to put cosmonauts in it for the next flight.
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