What constellations looked like in 818 AD; from a manuscript that is almost 1200 years ago. This manuscript is so old, algebra wasn’t discovered yet. (Muḥammad ibn Mūsā al-Ḵwārizmī will discover it in 820 AD) From Sammlung astronomisch-komputistischer und naturwissenschaftlicher Texte - BSB Clm 210 Source: http://bit.ly/1057AdH (https://sexycodicology.tumblr.com/post/53444901326/what-constellations-looked-like-in-818-ad-from-a)