A documentary produced in 1979 by WGBH and the BBC to celebrate the centenary of the birth of Albert Einstein. Narrated and hosted by Peter Ustinov and written by Nigel Calder, the author of the accompanying book of the same title, the film takes place at the University of Texas' McDonald Observatory where a staff of renowned scientists and physicists take both Ustinov and the viewer through a hands on experience of the various facets of Einstein's theory of general relativity.