near the end of Part Three of The Android Invasion (1975). The Doctor refers to Galileo Galilei in passing, saying, "Galileo would have been impressed." When one of the rebels rhetorically asks the Doctor, "What have we got to lose?" he replies, "Only your claims!" This is a playful paraphrase of the famous slogan derived from the last lines of The Communist Manifesto. K-9 refers to Pluto as "the ninth planet." It was regarded as such at the time the programme was written and broadcast; in 2006, Pluto lost that distinction when it was redefined as dwarf planet. In this episode, Leela and the Doctor are identified as "terrorists." In real life, Leela's character was partially based on Palestinian revolutionary Leila Khaled. Broadcast and reception The story was repeated on BBC1 on consecutive Thursdays from 10 – 31 August 1978, achieving viewing figures of 3.2, 6.5, 6.5 and 7.1 million viewers respectively. The BBC's Audience Research Report recorded a positive reaction from contemporary viewers, who were pleased the story and characters were more realistic, as well as finding the serial entertaining and well-developed. However, a "substantial minority" were less positive, finding it average science fiction and not strange enough. The Report also found that audiences rated the production values and Jameson's performance as Leela highly, while K9 was popular with younger viewers. Paul Cornell, Martin Day, and Keith Topping wrote of the serial in The Discontinuity Guide (1995), "A clever script is balanced by a straight-forward plot, although the subtlety of some of the jokes will be lost on a younger audience." In The Television Companion (1998), David J. Howe and Stephen James Walker praised the "high level of sophisticated humour" that satirized the tax system. In 2010, Mark Braxton of Radio Times also gave The Sun Makers a positive review, calling it very successful in terms of the writer's objectives and described it as "playful, witty, ingenious". In addition, he praised the performances, design, and music, and only noted minor faults such as the improbability that the Plutonians had never questioned their society. DVD Talk's Ian Jane gave the serial four out of five stars, saying that it "may not rank up there with the best that the series has to offer but it sure is a fun diversion". While he noted the high production values, he felt that the serial's strength was its script and performances. Dave Golder