Kepler orbit led to Johannes Kepler working on his celestial mechanics. He later became known as the father of calculus. In 1601, Johannes Kepler acquired the extensive, meticulous observations of the planets made by Tycho Brahe. Kepler would spend the next five years trying to fit the observations of the planet Mars to various curves. In 1609, Kepler published the first two of his three laws of planetary motion. The first law states: More generally, the path of an object undergoing Keplerian motion may also follow a parabola or a hyperbola, which, along with ellipses, belong to a group of curves known
Observations (Pierre Belon) Observations (Pierre Belon) Les observations de plusieurs singularitez et choses memorables trouvées en Grèce, Asie, Judée, Egypte, Arabie et autres pays estranges is a work of ethnographical, botanical and zoological exploration by Pierre Belon (1517–1564), a French naturalist from Le Mans. Starting in 1546, Belon travelled through Greece, Asia Minor, Egypt, Arabia and Palestine, returning to France in 1549. His "Observations", with illustrations, were first published in 1553. A second edition appeared in 1555. The work was translated into Latin by Charles de l'Écluse (Carolus Clusius) and published in 1589 under the title "Petri Bellonii Cenomani plurimorum singularium et memorabilium