Planetary systems in Gabriel Thibauld's "Summa philosophica quattor in partes distributa", 1639-41 @BeineckeLibrary. http://pic.twitter.com/hicENKGXSv
— History of Astronomy (@hist_astro) September 21, 2015
from http://twitter.com/hist_astro
on: September 21, 2015 at 01:39PM