In addition to Alan Turing developing the first modern computers, he also ventured in the realm of mathematical biology.
Turing patterns explain how patterns can emerge from seemingly homogeneous or random systems. See next (1/3) #Science#Math#Biology
By solving Reaction–diffusion equations, he showed how patterns in nature can arise, such as stripes, spots, and spirals. Turing patterns have been observed in the formation of the coat patterns of animals such as zebras, leopards, and many more! (2/3)
Retrograde motion is the apparent backwards motion that planets make as they travel across the sky.
Prior to the sun-centered model of the solar system, it was believed planets made loopty loops as they circled the earth.
The Copernican model explains this motion w/o loops. (1/2)