Who was the first person to observe the moon in human history?

Galileo was the first person to observe the moon and other celestial bodies with a homemade refracting telescope.

In addition, the earliest people who observed the moon and achieved results should be the Babylonians, or Mesopotamians. They created the earliest lunar calendar according to the movement of the moon, and the constellation 12, which we are familiar with now, was also the earliest division of Babylonians.