On the left, a cross section of a mouse neuron, stained to show three neurons and their connections. On the right, a snapshot of a simulation of the evolution of the universe at present day. Granted, one is a simulation, the other is a stained representation of biological components, so in reality, it means nothing at all (we aren't living in a the brain of a larger being), but I find the image visually striking and kind of cool to consider philosophically and scientifically. The image on the left is micrometers across. The one on the right is billions of light years across. (One light year is almost ten trillion kilometers.) Click on the link above to see a larger version on the NY Times website.
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