The study of astronomy can be tracked be to ancient time. The earliest record of
astronomical phenomenon is belong to Sumerian, a civilization in Mesopotamian era. While not
the first civilization to study astronomy, however with numerous philosopher, ancient Greek had
contributed many idea to astronomy. One of the ideas is the orbiting around the center of stars
and planets. Although proposed by Aristarchus that the Sun is center of the system, most
philosophers believed that Earth is the center of universe. Another civilization that have influent
on astronomy are Arabians (or Muslim community) evidence by many of star name which are
Arabic. In the modern time, one of the well-known astronomer is Johannes Kepler who propose
Kepler’s law of planetary motion.