Recognized in the world about which is the earliest record of sunspots

Sunspots, in the area of the surface performance for black.Due to the intense exercise material, sunspots changing frequently.Sometimes there are less than a day, sometimes can be more than a month, for half a year in the individual.

Now the world recognized the earliest records about sunspots, is the western han river ping (28 years BC) of the first year of march saw sunspots phenomenon, it is shown in han shu, "the five elements:" river of the first year of flat...Not accessible in March, sunrise yellow, have black gas such as money, the middle of the day."The records, and time, the position of the sunspot of them is very detailed.In the records of sunspots have earlier in our country, "huai south son" : "between Japan and China have a postscript to wu."Postscript to wu, also is the phenomenon of sunspots."Huai south son" written in about 140 BC.And Europe until 1610 because Galileo used a telescope and see this phenomenon.

According to the researchers to collect and arrange, since the 165 before a 1643 years of history in the observed sunspot records for 127 times.These ancient observation data for the study of the present solar activity provides precious, detailed and reliable data.