The Sky at Night the 55 years of Moore's tenure that he did not host the programme. Brian May, the Queen guitarist and astrophysicist, has been a guest on the show from time to time. On 1 April 2007, Moore presented the 50th Anniversary edition of the show, a special "time travel" edition which included the appearance of Jon Culshaw as Moore's younger self. The 50th anniversary programme was filmed at Teddington Studios as the 1957 home of the programme, Lime Grove Studios, had been demolished in 1992. On 6 March 2011, Moore presented the 700th edition of the show, a special retrospective episode
Patrick Moore campaigned unsuccessfully against the closure of the Royal Observatory, Greenwich in 1998. Among Moore's favourite episodes of "The Sky at Night" were those that dealt with eclipses, and he said "there is nothing in nature to match the glory of a total eclipse of the Sun." Moore was a BBC presenter for the total eclipse in England in 1999, though the view he and his team had from Cornwall was obscured by cloud. Moore was the patron of the South Downs Planetarium & Science Centre, which opened in 2001. On 1 April 2007, a 50th anniversary semi-spoof edition of the