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140
Ptolemy proposes the Geocentric Model/Theory
Ptolemy proposed his refined geocentric model. In the Ptolemaic universe, a planet moves in a small circle called an epicycle, and the center of the epicycle moves along a larger circle around the Earth. -
1473
Nicolaus Copernicus publishes On The Revolutions of Heavenly Spheres
Nicolaus Copernicus made a book called On The Revolutions of Heavenly Spheres. Also published just before his death. -
1543
Andreas Vesalius publishes On the Fabric of the Human Body
De humani corporis fabrica libri septem is a set of books on human anatomy written by Andreas Vesalius and published in 1543 -
Galileo's experiment at the Leaning Tower of Pisa
the Italian scientist Galileo Galilei is said to have dropped two spheres of different masses from the Leaning Tower of Pisa to demonstrate that their time of descent was independent of their mass. -
Francis Bacon publishes The Advancement of Learning
Francis Bacon's The Advancement of Learning is considered the first major philosophical book written in English. -
Johannes Kepler published his Laws of Planetary Motion
Kepler said all planets move about the Sun in elliptical orbits, having the Sun as one of the foci. -
Robert Hooke discovers cells
The cell was first discovered and named by Robert Hooke in 1665.
