Applications are now open until December 31st 2025 for new Individual and Junior Members of the IAU, using this Application Form. If you are new to IAU, please ‘create a new account’ to begin the application process. As a Junior Member, you can log in to start the application process. Those admitted to membership (by the IAU Executive Committee) will be affiliated with at least one of the IAU’s nine Divisions. Find out more on their website.
