In the journal Science, in an article titled “Extraterrestrial Cause for the Cretaceous-Tertiary Extinction”, Nobel-Prize-winning physicist Luis Alvarez and his son, geologist Walter Alvarez, propose their theory that the 110-mile-wide Chicxulub Crater discovered in the past few decades on the northern tip of the Yucatan Peninsula in Mexico is evidence of a large asteroid collision with Earth, resulting in the widespread death of the dinosaurs 65 million years before the modern day. A contentious peer review of the published theory follows, with many opposing theories proposed, though the Chicxulub hypothesis is eventually accepted as the “smoking gun” that killed the dinosaurs (the theory of an asteroid collision with Earth causing the extinction had been in circulation since the 1950s; the Alvarez theory is the first to point to a specific geological feature as evidence).

ITV airs the 24th episode of Roald Dahl’s anthology series Tales Of The Unexpected, hosted by the author himself and adapted from his short stories. Robert Lang guest stars.
Atari releases
Sega releases
Atari releases the
Chicago-based pinball manufacturer Stern makes one of its earliest forays into the booming video game industry with an altered version of the hit game Space Invaders, retitled
The Soviet Union launches Soyuz 37 on a week-long mission to visit space station Salyut 6. Part of the Interkosmos series, Soyuz 37 carries an international crew consisting of veteran cosmonaut Viktor Gorbatko and the first Vietnamese space traveler, Pham Tuan. Joint experiments are conducted with the long-duration crew of Salyut 6/Soyuz 35, and the Soyuz 37 crew departs in the Soyuz 36 capsule on July 31st, leaving the station crew with a fresh vehicle with which to make their own return home.
Japanese import
Cinematronics’ vector graphics arcade wargame
Atari releases the arcade game
Mattel Electronics releases the
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California Pacific Computer releases the computer role playing game game
Mattel Electronics releases the
NOAA’s GOES-4 Geostationary Operational Environmental Satellite is launched from Cape Canaveral into a geosynchronous orbit over 98 degrees west longitude on Earth, a position which will change several times over GOES-4’s career until 1988, allowing it to monitor weather over the continental United States and Europe. In 1988, GOES-4 will become the first satellite to be boosted into a “graveyard” parking orbit using its remaining propellant, leaving it intact in a higher-than-geostationary orbit to avoid collisions with operational satellites.
Midway releases
The first episode of the Hammer Studios-produced horror anthology series Hammer House Of Horror premieres on ITV. Patricia Quinn (The Rocky Horror Picture Show) and Ian McCulloch (Survivors) guest star in an episode written by Antony Read (Doctor Who).
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Mattel Electronics releases the
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