Jan van Eyck : The Last Judgement, c. Right panel of Crucifixion and Last Judgment diptych. Oil on canvas, transferred from wood. The Metropolitan Museum of Art, New York. "Among the earliest surviving works by Jan van Eyck"
The two pictures below illustrate the similarities. The top picture shows the neural network of a brain cell; the bottom picture shows the distribution of dark matter in the universe as simulated by Millennium Simulation.
It's pretty awesome to see an actual neuron and be able to identify it's components A neuron from the hippocampus at magnification. There are approximately 100 billion neurons in the human brain. Image by Dr. Carlo Sala, CNR Institute of Neuroscience