In Sphaeram
Clavius's influential commentary on Sacrobosco's Sphere, incorporating modern astronomical observations and calculations.
Chapter I (The Six Days of Creation)
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Verse 16: And God Made Two Great Lights
— Cited (ch. 1) on the moon being a thirty-ninth part of the earth
"Fr. Clavius in his Sphere, ch. 1"
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Verse 16: And God Made Two Great Lights
— Cited on the sun's distance and size relative to earth
"they teach that the sun contains within itself the whole quantity of the earth one hundred and sixty times"
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Verse 16: And God Made Two Great Lights
— Cited (ch. 1) on all the astronomical calculations of celestial distances and speeds
"These and more things Fr. Christopher Clavius teaches in his Sphere, ch. 1."