 Ebbersmeyer (2021), drawing on correspondence and on dedications of books, demonstrates Elisabeth’s awareness of and potential involvement in a number of areas of natural philosophy, including mathematics, medicine, microscopy, astronomy, and physics. Ebbersmeyer goes on to explore the details of Elisabeth’s interest in astronomy through her exchanges with Constantijn Huygens and Andreas Colvius, and to show that Elisabeth was involved in debates about the discovery of the moons of Jupiter, emerging maps of the moon of Earth, and the invention of new telescopes.