The International Astronomical Union (IAU) is a global organization of professional astronomers dedicated to promoting and safeguarding the science of astronomy. Founded in 1919, the IAU plays a crucial role in the naming of celestial bodies and the establishment of astronomical standards worldwide. With over 13,000 members from more than 100 countries, the IAU fosters international collaboration in astronomical research and education. It also organizes scientific meetings and publishes research to advance our understanding of the universe, making significant contributions to both professional and public astronomy.