Astronomy is the oldest of the sciences and deals with bodies and scattered matter within the universe. In studying astronomy it looks at the motion, evolution and origin of these bodies and matter.
Historically Babylonians were the first to initially explore the concept of astronomy by creating a calendar based on regular astronomical events. However the Greeks have had a big influence in modern Astronomy.
Greek astronomer Aristarchus 310-230 BC, was the first to maintain the earth rotated around the sun and that the earth revolved on its axis once every 24 hours. It was dismissed at the time, but centuries later would be proved correct.
Also Greek astronomer Ptolemy theory that the universe revolved around the Earth was in use for 1300 years. Disposing of this theory was Polish astronomer Copernicus who assigned the Sun as centre and the planets revolved around it.
These ancient studies form the basis for modern Astronomy. An extension of this ancient science is that it was recognised that the celestial bodies physical properties and structure could only be understood through physics and this has led to the introduction of astrophysics.