EntityQ540697· pop 12· linked from 20 articles1503 in scienceSign in to saveoverview of natural science-related events during the year of 1503Connectionslist of years in scienceEntityFranceCountryscienceEntityNeptuneEntityChristopher ColumbusPersontechnologyEntityPlutoEntityphysicianEntityCayman IslandsEntityInternational Standard Book NumberEntityTuscanyEntityastrologyEntityNostradamusEntityArezzoEntityFrenchEntitySpanish EmpireEntitysea turtleEntityhistory of technologyEntitybastionEntityGiuliano da SangalloEntityCategories1500s in science16th century in science