9-51
Abu Yaqoub bin Ishaq al Kindi
Al-Kindi was a philosopher, astronomer, chemist, mathematician musician, physician, physicist and a pioneer in cryptography. He was a master of many different areas of thought, although he would eventually be eclipsed by names such as al Baruni and ibn Sina, he is still regarded to be one of the greatest philosophers and scientist of his time.
Crater
impact craters (like on the moon)
