The series was the last produced by the partnership of Sylvia and Gerry Anderson, famous for the TV series Thunderbirds, Fireball XL5, and UFO. The Andersons' marriage foundered during production of Space: 1999, and the end of production of the first series marked an end to their working association. Trivia point: Note the use of the distinctively shaped Commodore P.E.T. computers throughout the ship's bridge. Extra trivia points go to those who remember what P.E.T. stands for (without looking it up online)!

• The Catacombs - A comprehensive guide to Space:1999
• Sorellarium: 13 - A reference guide to the furniture used in the series
• Main Mission 2000 report - A review of a recent Space: 1999 convention
• Space: 1999 catalogue entry in British Film Institute Screen Online
• Fanderson - The official appreciation society for the work of Space: 1999 creator Gerry Anderson
• Martin Bower's Model World - A guide to some of the model ships featured on Space: 1999
• Ring Around The Moon - Space:1999 Webring - A listing of Space: 1999 fan pages
• Space: 1999.Net - A Space: 1999 appreciation page
• Space: 1999.Org- A Space: 1999 appreciation page
• Space: 1999 at pHinnWeb - A Space: 1999 appreciation page
• The Space:1999 Population Countdown - An index of Space: 1999 character fatalities
• Space: 2001: Writer Johnny Byrne wants to Party like it's 1999... Again - Interview with Space: 1999 story editor Johnny Byrne
• Starship Modeler - Eagle Reference - Images of various incarnations of the Eagle Transporter
• A scientific examination of the breakaway
• The Space: 1999 Page - Written by Kevin McCorry
• Space: 1976-8: Boy Meets Alpha - Remembrances of ''Space:1999'''s first run on CBC-TV in Canada, written by Kevin McCorry
• Powys Media - Powys Media, publisher of new releases of Space:1999 books
• Space:1999 Concordance - John Kenneth Muir's Space:1999 page