295 years ago today, on June 26, 1730 (May 12, 1730, the 1730 lunar calendar), French astronomer Charles Messier was born. Charles Messier (also translated as Messier, Messier, June 26, 1730-April 12, 1817) was a French astronomer. His achievements were to number nebulae, clusters and galaxies, and to produce the famous "Messier Cluster Nebula List". He was born in Badonville, in the provinces of Mehte and Moselle in Lorraine, France. Starting in 1751, he served as astronomer Joseph? at the French Naval Observatory in Paris Nicholas? Assistant to Joseph Nicholas Delisle (1688 - 1768), fascinated by observing comets. Starting in the winter of 1758, he began searching for the expected appearance of Halley's Comet based on previous observations. It was finally discovered on January 21 of this year. However, this was a month later than another astronomer's discovery. Despite this, he rose to fame because of it. In 1760, Drihill retired and Messino took over as a civil servant. In the process of searching for comets, Messier, who suffered from the frequent ambiguity of comets and other celestial bodies, began to make a list of comets and interstellar hazy objects since early 1764. At the end of the same year, he made a list of 40 celestial bodies. Later, after discovering M41 in Canis Majoris in 1765, he added five celestial bodies, including M41-M45, to the list. In 1769, the great comet (C/1769P1) was discovered near the constellation Aries, and he became a foreign academician of the Berlin Academy of Sciences. The following year, he discovered another comet and became a full member of the Paris Academy. He discovered a total of 12 comets in his lifetime. He published Volume 1 (M1-M45), Volume 2 (M46-M68) and Volume 3 (M69-M103) of the Messier Cluster Nebulae List in 1771, 1781 and 1784 respectively. The objects listed on these lists are all called "Messier objects." For example, M31 represents the Andromeda Galaxy. Messier also included binary stars (M40) or star clusters (M45 etc.) in consideration of the genre of the list. Messier used a small telescope with an aperture of 5-7 centimeters. Later, when large-aperture telescopes appeared, it was discovered that Messier's objects contained many nebulae, star clusters and galaxies. In memory of him, posterity named a crater on the moon "Messier", and asteroid 7359 was also named after him. King Louis XV of France once called him "my comet hunter." Comments: Astronomers who have won high honors internationally have made irreplaceable and immortal contributions to world astronomy research and development.