Equinox is a British science and documentary programme. The series ran from 31 July 1986^[1] to 21 December 2006, originally airing on a weekly basis on Channel 4.

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Quick Facts Equinox, Country of origin ...

Equinox
Equinox title card
Country of origin	United Kingdom
Original language	English
Production
Camera setup	4:3, 16:9
Running time	60 min
Original release
Network	Channel 4
Release	31 July 1986 (1986-07-31) – 21 December 2006 (2006-12-21)

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The number of films per series fell over the years, from eighteen one-hour films a year originally to twelve by the late 1990s. The last regular series was shown on 21 December 2006, with twelve films. One-off films have occasionally been aired under the title "Equinox Special" (e.g. the 90-minute Secrets of the Super Psychics first transmitted in 1997).

• F1 TURBO - Once Around The Block (1986) – follows the development of the Ford Cosworth GBA TEC V6 Twin Turbo Formula 1 engine
• Dismantling The Bomb (1994) – just how do you dismantle the world's nuclear weapons stockpile?
• It Runs On Water (1995) – the alternative energy and over-unity energy revolution – foreword by Arthur C Clarke
• A Very British Bomb (1997) – the development of the UK's home grown H-bomb
• The Engines That Came In From The Cold (2001) – decades-old Soviet rocket engines that are way ahead of anything being made in the West and NASA wants them.

• Horizon comparable BBC2 strand, on air since 1964.
• Q.E.D. more populist BBC1 science documentary series, which ran from 1982 to 1999.
• Nova documentary series on PBS in the United States, which often bought in and re-voiced Equinox and Horizon films.