02/12/2025
On 30 November 1609, Galileo Galilei used his telescope for the first time to study the Moon. He noted the irregularities of the crescent face, and made a drawing to record his discoveries.
Galileo Galilei did not invent the telescope. The honor is usually reserved for Hans Libbershey, a Dutch eyeglass maker, who was at least the first person to apply for a patent, in 1608. But Galileo was a very early adopter, and improver, of the instrument. Prior to Galileo’s illustrations, “virtually no one bothered to represent the Moon with its spots the way it actually appeared.” This was in part due to a belief, derived from Aristotle, that the Moon, and every other astral body, was perfect, in contrast to the Earth’s irregularities.
Galileo incorporated his findings into his treatise Sidereus Nuncius (“The Starry Messenger”), published in Latin in March of 1610.
Read more on Galileo Galilei on my blog: https://sciencemeetsfaith.wordpress.com/2024/01/01/revisiting-the-galileo-affair/
