Sir Patrick Alfred Caldwell-Moore CBE, FRS, FRAS (4 March 1923 – 9 December 2012) was an English amateur astronomer who attained prominent status in that field as a writer, researcher, radio commentator and television presenter.
Moore was president of the British Astronomical Association, co-founder and president of the Society for Popular Astronomy (SPA), author of over 70 books on astronomy, and presenter of the world's longest-running television series with the same original presenter, the BBC's The Sky at Night. As an amateur astronomer, he became known as a specialist in Moon observation and for creating the Caldwell catalogue. Idiosyncrasies such as his rapid diction and monocle made him a popular and instantly recognisable figure on British television.
Moore was also a self-taught xylophone, glockenspiel player and pianist, as well as an accomplished composer. He was a former amateur cricketer, golfer and chess player. In addition to many popular science books, he wrote numerous works of fiction. Moore was an opponent of fox hunting, an outspoken critic of the European Union, supporter of the UK Independence Party and served as chairman of the short-lived anti-immigration United Country Party. He served in the Royal Air Force during World War II. He never married or had children.