M 45 - "The 7 Sisters" - Open Star Cluster in Pleiades (1)

"...Behind every man now alive stand 30 ghosts, for that is the ratio by which the dead outnumber the living. Since the dawn of time, roughly a hundred billion human beings have walked on Earth. Now this is an interesting number, for by a curious coincidence there are approximately a hundred billion stars in our local universe: the Milky Way..."

Arthur C. Clarke - "2001 - A Space Odyssey"