Proclus: On the Sphere; Cleomedes: On the World; Aratus: Phenomena

English translations of this work exist from another source language, but this specific text has never been translated.

The book in question is a 1561 Latin compilation of three distinct ancient Greek astronomical works: Proclus's 'De Sphaera', Cleomedes's 'De Mundo', and Aratus's 'Phaenomena'. These are well-known Greek texts that have been translated into English many times directly from the original Greek. However, there is no evidence that this specific 1561 Latin compilation—or the Latin versions of these texts contained within it—has ever been translated into English. The English translations that exist for these works are based on the Greek originals, not the Latin translations found in this 1561 volume. Therefore, this is a 'first_from_source' case, as English translations exist from the original Greek, but not from this specific Latin source text.

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