Answer: Some of the accomplishments were they studied the heavenly bodies, mapped the stars, planets, and the phases of the moon. There were many famous ancient astronomers, and astronomers from hundreds of years ago (not exactly ancient. but vital to our present understanding of astronomy). They include: Hipparchus Ptolemy Copernicus Galileo Eudoxus There were also many Egyptian, Mayan, and Chaldean astronomers whose names have been lost over time. Another important aspect to the Chaldean was their belief of the sun, moon, and stars was the fact that they had the idea that each phase of the moon controlled a woman’s fertility. The moon was a god named Sin, and Sin was there to get rid of darkness and control dreams.