The 1970s was such a turbulent, colourful decade that it’s sometimes forgotten that it also produced some the best loved TV programs of all time. The wealth of entertainment on offer was no different in the realm of science fiction, with tons of brilliant series gracing our screens. Such was the diversity that it’s tough to pick five, which we’d love to see make a comeback, but we set our phasers on retro and gave it our best shot, nonetheless.