Abraham Ben Esra [Ibn Esra] (12. Century)
Ben Esra, also known as 'the wise', was a rabbi, was born between 1093 and 1096 in Calahorra, Spain. He compared the spheres of Ptolemy with those of the Persians and the Indic culture. He wrote several papers on Astrology. A Moon crater is named in his honor.

Pogg. III, p. 7
Illustr. Lexikon der Astronomie, by Adolph Drechsler, Verlag J.J. Weber, Leipzig 1881, p. 5
Dictionary of Scientific Biography
Vol. 4 (1971), p. 504
Moon Atlas, A. Rukl, Verlag Werner Dausien, Hanau.

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