Why are there seven days in a week ?

Explorations: 1.1, 1.2;        AsT : 1.2, 2.1, 2.2;       ExpU : Ch.1: Early Astronomy: Myth and Science

???

Aristarchus

Why not ?

parallax

Philosophy Physics Chemistry Astronomy

Section References

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References:

Explorations: 1.1, 1.2;        AsT : 1.2, 2.1, 2.2;       ExpU : Ch.1: Early Astronomy: Myth and Science

Optional Further Reading (from WWW):

• Planet names in many languages; and weekdays from Bill Arnett's TNP
• Naked Eye Astronomy by Nick Strobel. Celestial Sphere, Phases of the Moon, Eclipses, etc...
• The beginning parts of History and Philosophyof Western Astronomy by Nick Strobel. Socrates, Plato, Aristotle,Ptolemy, etc...

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