Name one of the academic specialties of Leo Derocher.
Age of Enlightenment The Enlightenment (also known as the Age of Enlightenment or the Age of Reason; in French: "le Siècle des Lumières" , '"the Century of Lights"' ; and in , "Enlightenment") was an intellectual and philosophical movement which dominated the world of ideas in Europe during the 18th century, "The Century of Philosophy".
Astronomer An astronomer is a scientist in the field of astronomy who concentrates their studies on a specific question or field outside the scope of Earth. They look at stars, planets, moons, comets and galaxies, as well as many other celestial objects — either in observational astronomy, in analyzing the data or in theoretical astronomy. Examples of topics or fields astronomers work on include: planetary science, solar astronomy, the origin or evolution of stars, or the formation of galaxies. There are also related but distinct subjects like physical cosmology which studies the Universe as a whole.