-
Period: 100 to
YEARS B.C.
-
364
Earliest recorded observation of sunspots
The earliest recorded observation of sunspots made were by Astronomer Gan De dating from about 364 BC -
532
A nova was recorded
A nova was recorded in Records of the Grand Historian and Zuo Zhuan -
Jan 1, 1200
First known star catolauges
First Babylonian star catolauges dating from about 1200 B.C. -
Jan 1, 1570
Phenomenea of a planet is called periodic
The tablet of Ammi-Saduqa that lists the first and last visible risings of Venus over about 21 years is the earliest evidence that phenomena of a planet was reconized as periodic -
The use of Mathmatics to determine the lenght of daylight
Babylonian tablets that documented the application of mathmatics to figure out the length of daylight over a solar tear -
First known/recorded solar eclipse
In a Chinese book of astronomical history are the earliest known records of a solar eclipse -
Stonehedge is started
The first stage of Stonehedge was built and was believed to be a lunar/solar observatory -
The use of a sexagesimal
Sumerians used a sexagesimal (base 60) place-value number system, which simplified the task of recording very large and very small numbers -
365 day calender in use
The Egyptians created a claneder having 365 days on it -
Cuneiform emerged from the Sumerians around 3500–3000 BC
A form of writting used to document Astonomy dating from 3500-3000 BC
