Sir Patrick Moore expands the mind with talk of the expansive universe. What is a light year? What is a black hole? How big is Jupiter? What is the sun made out of? Join Professor Haffle on his fictitious journey through space, and enjoy learning about some of life's biggest cosmic quandaries in this entertaining and educational piece.

Sir Patrick Alfred Caldwell-Moore (CBE, FRS, FRAS), was an amateur astronomer, writer, researcher, radio commentator and television presenter.