Wissenswertes

Joseph Losey had also directed the original Broadway production of "Galileo," 28 years previously.

Sir John Gielgud's cameo was filmed in one day.

All of the cast worked for little money.

Michael Gough was a last-minute choice after the actor first cast as Sagredo was taken ill during lunch.

The role of Sagerdo was first intended for a younger man. In fact, all of the original possibles were men in their thirties.