Van Gogh was a real genius that painted one of the hardest concepts in sciences: the Turbulence.
He painted the Starry Night in one of his worst moments, when he wasn't himself, and made his problems art. It only happens with the Starry Night, and some more canvas that he painted when he cut his ear. We can see the Turbulence explained in this video:
It is so brilliant how our brain takes us to the limits of the Earth, and as the sentence says,
"The Earth without art is eh..."