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staedtler staedtler
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7 years ago
The plane of the Earth's orbit around the Sun, the ecliptic plane, over periods of hundreds of years,

(a)   remains fixed at an angle of 23.5  to the celestial equator.
(b)   is coincident with the celestial equator, by definition.
(c)   varies between angles of +23.5 and -23.5  from the celestial equator through the year, making an angle of 0 to the equator at midsummer and midwinter.
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Discovering the Universe

Discovering the Universe


Edition: 7th
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staedtler Author
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7 years ago
On behalf of my study group and I, thank you
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