Edward Gresham, practitioner of astrology, medicine and maker of magic was born on this day in 1565. He is known for his treatise Astrostereon and many believed his almanacs and ‘predictions’ foretold the Gunpowder Plot of 1605 – to the point that he was implicated in them. His astrological almanacs were published 1603-1607.
He studied at Trinity College, Cambridge. He was also involved in courtly intrigues, one being the divorce of Robert Devereux, third Earl of Essex, another the poisoning of Sir Thomas Overbury. Gresham was an adherent of the heliocentric theory of the universe. He expressed this belief in his almanacs and writings. The complete account of Gresham’s astronomical beliefs can be found in his manuscript Astrostereon or the Discourse of the Falling of the Planet, 1603.
There are several topics addressed in the Astrostereon. The treatise contains a set of well-articulated arguments in favor of a sun centered cosmos and solar system, which was a new philosophy. Gresham believed that planets are made of the same material as Earth and he was controversial in that his writings stated that his views of the earth and solar system didn’t oppose biblical teaching.
As a scientist, the Astrostereon is a prime example of an Elizabethan mindset in that he attempted to reorganize the fundamentals of astrology to fit into their ‘new’ system of the universe.