朝鮮王朝実録
The first recorded observations of solar eclipses and supernovae were made in China. On July 4, 1054, Chinese astronomers observed a "guest star", a supernova, the remnant of which is now called the Crab Nebula. Korean contributions include similar records of meteor showers and eclipses, particularly from 1500-1750 in the Annals of the Joseon Dynasty. Traditional Chinese Medicine, acupuncture and herbal medicine were also practised, with similar medicine practised in Korea.