Another actor was originally cast as Nordstrom but became sick after the special milky contact lens had been made - it had to be used for the replacement actor Roy Scammell. Nick Tate was originally cast as Collins. Moonbase Alpha is comprised of several buildings spread our radially from a central tower (known as Main Mission Tower, where the control centre is located), connected at ground level and underground by a network of Travel Tubes, pressurised tubes that enable quick travel from one part of the base to another via 'cars' that can hold up to six pa.As a result they were blacklisted by the unions. As it was under threat of closure, the entire production moved to Pinewood Studios one weekend. Benjamin Ouma was meant to be a series regular but people disliked working with Lon Satton so he was fired.In the year 1999, the Earth's moon is torn from its orbit when a nuclear explosion occurs on a radioactive dump site, sending moon base Alpha and its crew on a journey through the galaxy.
