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The Sky at Night

on BBC One London

Algol: The Winking Demon
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.
Producer PATRICIA WOOD

Contributors

Unknown:
Patrick Moore
Producer:
Patricia Wood

BBC One London

About BBC One

BBC One is a TV channel that started broadcasting on the 20th April 1964. It replaced BBC Television.

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