But the thing is that our brain is made up of a complex network of nearly 100 billion neurons that form 100 trillion neural connections. These neurons are organized into networks of nodes, filaments, and clusters that shape your thoughts, feelings, and emotions.
But these neurons make up less than 25 percent the mass of your brain, leaving the remaining 75 percent as water.
In a bizarre coincidence, the observable universe also contains an estimated 100 billion galaxies. The teetering balance between the pull of gravity and the accelerated expansion of the universe forms a cosmic web of string-like filaments composed of ordinary and dark matter.