We tackle the first in the series of seven lectures by theoretical physicist Dr. Richard Feynman titled "The Character of Physical Law", this first lecture being on the Law of Gravitation, the history of its discovery, and its wider application in the methods of science and the further discoveries of physics. Copernicus, Tycho, Kepler, Newton, and Einstein are among the giants on whose shoulders modern physics stands. Get the book from Amazon: https://www.amazon.com/Character-Physical-Law-MIT-Press/dp/0262533413 Get the audiobook from Audible: https://www.audible.com/pd/The-Character-of-Physical-Law-Audiobook/B00CS962AS?source_code=AUDORWS0718179KY7 Below are some of the images we were looking at of Tycho's planetary observation tools.