The Sky at Night

Season 17, Episode 6

Episode Title: The Colours of the Stars

Air Date: 1973-06-04

Overview:

Ancient astronomers described Sirius the Dog-Star as red: but what colour is it today? A few weeks ago, Patrick Moore asked viewers to tell him what colour they see Sirius, and now he analyses the thousands of reports he received, and explains the significance of the colours of stars.