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Episode Details: Algol: The Winking Demon
Algol: The Winking Demon
Series: The Sky at Night
Season: Season 19
Episode Number: 3
Air Date:
Duration: N/A min
Algol, the Demon Star, is now well on view during the evening. Every two-and-a-half days the star seems to give a long, slow ' wink.' Patrick Moore describes this remarkable eclipsing binary and explains its importance.