Ancient Stars Ancient Secrets Ancient Mariners

Ancient Stars Ancient Secrets Ancient Mariners

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Betelgeuse, also known as Alpha Orionis, is a variable star whose magnitude varies between 0.2 and 1.2. This means that the star brightens and fades over a period of about 400 days. The variation in Betelgeuse's brightness was believed to have been observed with a telescope in 1836 by Sir John Herschel, when he published his observations in Outlines of Astronomy.

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