364 BC - Earliest recorded observation of sunspots made by Gan De.[1]
28 BC - May 10, Chinese imperial history book, the Book of Han, makes earliest known dated record of sunspots; systematic Chinese observations of sunspots continue thereafter.[2]
185 - The earliest recorded supernova of RCW 86
687 - Chinese make earliest known record of meteor shower.
1054 - July 4, Chinese astronomers noted the appearance of a guest star, the supernova which produced the Crab Nebula, Messier's M1.
1088 - In his Dream Pool Essays, the polymath Chinese scientist Shen Kuo (1031–1095) wrote of his findings for the improved meridian measurement between the pole star and true north, which was an invaluable concept for aiding navigation by use of the magnetic compass. Shen Kuo also argued for spherical celestial bodies by using evidence of lunar eclipses and solar eclipses, which promoted the spherical Earth theory and went against the flat Earth theory.
^"Early Astronomy and the Beginnings of a Mathematical Science". NRICH (University of Cambridge). 2007. Retrieved 2010-07-14.
^"The Observation of Sunspots". UNESCO Courier. 1988. Archived from the original on 2012-06-28. Retrieved 2010-07-14.{{cite journal}}: CS1 maint: bot: original URL status unknown (link)