According to the Chinese book The Ocean of Jade China was observing sunspots. Officially, the Chinese sunspot observations began in 28 BCE and the data was used in astrological forecasting.
- On This Day In History: Sunspot Observed By Chinese Astronomers …
May 10, 2016 – AncientPages.com – On 10th May, 28 BC, a sunspot was observed by astronomers during the reign of Emperor Cheng of of theWestern Han …
- The Galileo Project | Science | Sunspots
Records of naked-eye sunspot observations in China go back to at least 28 BCE. In the West, the record is much more problematical. It is possible that the Greek …
- The History of Sunspots | HowStuffWorks
Astronomers in ancient China noticed sunspots several thousand years ago. … The first written record of a sunspot sighting dates to 28 B.C., when it was noted that … bears a spot 10,000 times larger than the biggest spots observed on the sun.