Donate to the IAU

Support astronomy and its contribution to societal change

Astronomy inspires curiosity, wonder and exploration of our Universe. Whether it is fostering a love of science in the hearts of schoolchildren, or challenging researchers to address the Universe’s greatest questions, today’s astronomers play a leading role in delivering the world’s most innovative technological and societal advances.

Over the last hundred years, the IAU community has made discoveries that have transformed the way we view Earth and the wider Universe. Within society’s current challenges and looking to the future, our mission remains as important as ever. With your support, we can achieve even more.

We welcome single or recurring donations of any amount, both of which can be made through our secure payment provider, Whydonate. Thank you very much for your support.


Further information on the IAU Appeal is available here and here.

The International Astronomical Union is registered in France as a not-for-profit organisation, under 1901 law, to promote and safeguard the science of astronomy in all its aspects, including research, communication, education and development, through international cooperation.

You will automatically receive a receipt for your donation and be redirected back to this page upon completion. If you would prefer for your donation to remain anonymous but still wish to receive a receipt, please email for further information. Your record will remain confidential.


French donors can benefit from a tax reduction of 75% up to donations of €1,000 and 66% thereafter.


Donations from Dutch taxpayers are deductible from taxable income in the Netherlands.

Data Processing

The personal data gathered through this form is solely for the processing of donations, mandated by IAU to be delivered through third-party providers, and it shall have no other use. The personal data may be transferred to a country outside of the European Union for that purpose, but your personal data shall always be protected under the European Union data protection rules.

In accordance with GDPR and the Data Protection Act, you have the right to access your personal data and request information regarding the respective data processing, and request a copy of the personal data, free of charge.

As a safeguard against abuse, IAU will ask you to provide a proof of identity before providing access to any personal data. If you are not able to provide a proof of identity, IAU reserves the right to refuse to send the personal data.

You may request at any time that IAU corrects the personal data in its record regarding the donation.

Should you wish to exercise your above rights, please contact us at or by mail at:

IAU–UAI Secretariat
98-bis Blvd Arago
F–75014 Paris


Villagers from the northern Indian state of Ladakh stand proudly in front of a sign welcoming tourists to the first Astro HomeStay or AstroStay in the region. At 4276 metres above sea level, the village is one of the best locations for stargazing. Villagers trained on basic astronomy and telescope operations act as night sky guides, attracting tourists to an otherwise remote location not on the tourism map, thus bringing in much needed revenue to the community. The project was supported by the IAU OAD under its annual call for proposals. Credit:Astrostays/GHE


IAU Strategic Plan 2020–2030

Strategic Plan

IAU Code of Conduct

Code of Conduct

Symposia and Meetings


IAU General Assembly 2021



How to Become a Member

IAU Catalyst

Latest Catalyst

IAU e-Newsletter
Volume 2020 n° 8

Latest e-Newsletter

Subscribe to the e-Newsletter


IAU Office of Astronomy for Development

Office for Astronomy Development

IAU Office for Young Astronomers

Office for Young Astronomers

IAU Office for Astronomy Outreach

Office for Astronomy Outreach

IAU Office of Astronomy for Education

Office of Astronomy for Education

International School for Young Astronomers

International School for Young Astronomers