Ars Astronomica
A scholarly imprint producing first English translations of historical Hebrew and Latin works in astronomy, cosmology, and natural philosophy.
These texts span centuries, and most have never appeared in English. One – Gersonides’ 136-chapter mathematical astronomy – was never printed and survives only in manuscript. They cite and answer one another, addressing the same cosmological questions, yet until now no one could read them side by side in a single language.
The corpus
2026-07-05
Added eight works to the corpus: Milchamot HaShem (Gersonides), Sefer HaBrit HaShalem (Hurwitz), Tzemach David (Gans), Keli Ḥemda and Orah Selulah (ibn al-Aḥdab), Roba’ Yisrael (ibn Tibbon), Perush Sod ha-Ibbur (Jacob ben Samson), and Sefer ha-Ḥeshbon ve-ha-Middot (Comtino).
Cheshbon Mahalechot ha-Kochavim (bar Ḥiyya ha-Nasi) was retitled from its earlier heading, Po’al ha-Shem ve-Cheshbon Mahalechot ha-Kochavim.
Some works now carry improved source records – Nechmad ve-Na’im, for one, now cites the National Library of Israel’s own digitized exemplar.
2026-06-29
All translations are now at version 2 , regenerated with the corrected pipeline. Version 1 turned out to be an intermediate stage and has been superseded.
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