PAPER INSTRUMENT – MARTIN, Benjamin. A View of the Solar System and Orbit of the Comet with its proper Elevation. London: 1757. Engraved broadside (plate mark 255 x 372mm) showing the probable transit of Halley's Comet for 1758, with three-dimensional f
Johannes Kepler - Astronomy, Laws, Heliocentrism: The ideas that Kepler would pursue for the rest of his life were already present in his first work, Mysterium cosmographicum (1596; “Cosmographic Mystery”). Kepler had become a professor of mathematics
Johannes Kepler, German astronomer who discovered three major laws of planetary motion. His discoveries turned Nicolaus Copernicus’s Sun-centered system into a dynamic universe, with the Sun actively pushing the planets around in noncircular orbits. Lea