Je was op zoek naar: heliocentric (Portugees - Engels)

*"on the allegedly heliocentric theory of venus by heraclides ponticus.
* "on the allegedly heliocentric theory of venus by heraclides ponticus.

'umar al-katibi al-qazwini (d. 1277), who also worked at the maragheh observatory, in his "hikmat al-'ain", wrote an argument for a heliocentric model, but later abandoned the model.ibn al-shatir (b.
at the maragha observatory, najm al-dīn al-qazwīnī al-kātibī (d. 1277), in his "hikmat al-'ain", wrote an argument for a heliocentric model, but later abandoned the model.