This article was originally published with the title “ The Periodic Table of the Cosmos: 100 Years of the Hertzsprung-Russell Diagram ” in Scientific American Magazine Vol. 305 No. 1 (July ...

Maria Popova of Brain Pickings came across these images in the 1887 book Geometrical psychology, or, The science of representation, an abstract of the theories and diagrams of B. W. Betts, edited ...

One Big Family: This Beautiful Interactive Diagram Shows How Every Organism Is Related. ... First of all, it’s been created from a mammalian point of view. A diagram bacterial point of view, ...