This volume makes available to the scholarly world the "Otot ha-Shamayim," Samuel Ibn Tibbon's Hebrew version of Aristotle's "Meteorology," completed in 1210. This treatise, based on the Arabic paraphrase of the "Meteorology" by Ibn al-Bitriq, was the first Aristotelian work to be translated into Hebrew. As it contains quotations from the lost Arabic translation of Alexander of Aphrodisias' commentary on the "Meteorology" and from Ibn Rushd's commentary, it provides a more complete picture of Aristotle's text than the Arabic paraphrase. The present volume contains a critical edition of Ibn Tibbon's text as well as an English translation and an extensive introduction. In addition to contributing to our knowledge of the history of the transmission of the Aristotelian text, the present book is of major importance for the study of medieval Jewish philosophy.