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3,200-Year-Old Papyrus Contains Astrophysical Information about Variable Star Algol

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3,200-Year-Old Papyrus Contains Astrophysical Information about Variable Star Algol | Archaeology, Astronomy | Sci-News.com

Ancient Egyptians wrote Calendars of Lucky and Unlucky Days that assigned astronomically influenced prognoses for each day of the year. The best preserved of these calendars is the Cairo Calendar dated to 1244 – 1163 BC (Ramesside Period). According to scientists at the University of Helsinki, this papyrus is the oldest preserved historical document of naked eye observations of a variable star, the eclipsing binary star Algol.
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Re: 3,200-Year-Old Papyrus Contains Astrophysical Information about Variable Star Alg

Did you know one of the reasons that our Sun is relatively unique in the galaxy is that it belongs to the roughly 1/3 of stars that are singular and not part of a two-star or larger group (that we know about)?
 
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Re: 3,200-Year-Old Papyrus Contains Astrophysical Information about Variable Star Alg

MrT said:
Did you know one of the reasons that our Sun is relatively unique in the solar system is that it belongs to the roughly 1/3 of stars that are singular and not part of a two-star or larger group (that we know about)?
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Our solar system only has one star, perhaps you meant Galaxy?
 
Re: 3,200-Year-Old Papyrus Contains Astrophysical Information about Variable Star Alg

edited, thanks
 
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