Labels:text | screenshot | font OCR: This page is titled "Of the moon. No solid body is lighter than air." A The notes are clear and orderly, the diagrams are accurate, and the crescent moon at the bottom of the page B has a captivating presence. By the 15th century, Ptolemy's "eccentric orbit" theory-that the moon and other celestial bodies orbit the earth-was widely accepted. Leonardo's discussion of the moon and its own elements alludes to Ptolemy's revision of Aristotle's view that all celestial bodies circled the unmoving earth, each at a different level