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.