Jean-Philippe de Cheseaux was an 18th-century Swiss astronomer and mathematician, known for his contributions to the field of astronomy. He was born in 1718 in Lausanne, Switzerland, and became notable for his work on the measurement of the distance to stars and the study of comets. Cheseaux is particularly recognized for his observations of the Great Comet of 1744, which he documented extensively. His research laid the groundwork for future astronomers and helped advance the understanding of celestial phenomena during his time. He passed away in 1751, leaving a legacy in the scientific community.