ABSTRACT
We shall thus affirm clearly, and with no risk of being proven wrong, that the Configuration of the Universe as we have it is not a work of alºasan ibn al-Haytham, but is quite probably a book by MuΩammad ibn alHaytham. As far as the title Configuration of the Universe, attributed to alºasan, is concerned, it would be that of a book that has never come down to us or the result – and here we enter the realm of conjecture – of a modification of the title of his book On the Configuration of the Motions of Each (kull, all) of the Seven Stars, which could have been written On the Configuration of the Motions of the all ... Yet while it is true that this conjecture must await the confirmation of future research, the attribution of the Configuration of the Universe to al-ºasan is henceforth indefensible.
