translation.ar: أدركنا أخيرا أن الفلكيون كان لديهم فرضيتين جانبيتين و اللتين يمكن أن نقول عنهما انهما خطأ
translation.en: Well, in hindsight we can say that astronomers were making two auxiliary hypotheses, both of which we would now say were incorrect.