““If you were a hapless cosmic hitchhiker stranded between the stars of the Milky Way, your body would represent a concentration of matter a hundred million trillion times greater than the sparse interstellar space around you. To put that another way, take a look at the tip of your little finger. That pinky end contains about 10^23 atoms. That number is the same as the total number of atoms in a sphere of about 100 million cubic kilometers of typical interstellar void.””
