The International Astronomical Union

The International Astronomical Union Our mission is to promote and safeguard the science of astronomy through international cooperation. Of those 73 are National Members.

The International Astronomical Union (IAU) was founded in 1919. Its individual members — structured in Divisions, Commissions, and Working groups — are professional astronomers from all over the world, at the PhD level and beyond, and active in professional research and education in astronomy. The IAU has 10593 Individual Members in 94 countries worldwide. In addition, the IAU collaborates with va

rious scientific organizations all over the world. House Rules
Welcome to the official page for the International Astronomical Union (IAU), where you will find the latest information about the IAU, its activities and more! Thank you for choosing to be a part of our community! We have some “house rules” so that you always know how we can help you and what you can expect from us. If you have any questions, we are available through private messages. Write us a message and you will receive a response within five working days. We will answer questions regarding our activities. Unfortunately, we are not able to answer general questions about astronomy and other topics not directly related to our activities. If you want to send us an image, link or any other material, please send it in a private message. The option to post directly on our timeline is not enabled. We receive many requests, and unfortunately we are not able to share/advertise/promote all of them. As we want to give everyone equal and fair treatment, we have decided not to promote pages, initiatives or other projects with no direct connection to the IAU. If you want to add a comment to a post, please engage in a dialogue based on respect and understanding. We want you to have a useful and pleasant experience on our page, so to ensure that you will enjoy being here, but also to protect you, we will do the best we can to remove from our page the following types of behaviour:

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The IAU invites Letters of Intent (LoI) for its 2028 Symposia. Symposia are a core activity of the IAU, serving as key d...
24/08/2026

The IAU invites Letters of Intent (LoI) for its 2028 Symposia.

Symposia are a core activity of the IAU, serving as key drivers of global research by significantly advancing their respective fields, fostering cross-border collaboration, and facilitating in-depth discussions on emerging astrophysical concepts.

Deadline: 15 September 2026
https://www.iau.org/IAU/News/Ann2026/Call-LoI-2028-Symposia.aspx

IAU President, Prof W***y Benz, and IAU CPS Director, Prof Piero Benvenuti, as well as Federico Di Vruno from SKAO/CPS p...
20/08/2026

IAU President, Prof W***y Benz, and IAU CPS Director, Prof Piero Benvenuti, as well as Federico Di Vruno from SKAO/CPS participated in the first dedicated Dark and Quiet Skies discussion at the 46th Committee on Space Research - COSPAR Scientific Assembly.

The session considered the issue from scientific, technical, operational and regulatory perspectives as well as recognising the broader concerns about the environmental and societal effects of activity in near-Earth space.

COSPAR will establish a dedicated Task Group on this topic to support the current initiatives.

https://cosparhq.cnes.fr/news/dark-and-quiet-skies-at-cospar-2026/
photo credits: COSPAR

The IAUJuniorMember invites Early-Career Members to join the next IAU Early-Career Summer talk by Dr. Kaleb Alho on Frid...
19/08/2026

The IAUJuniorMember invites Early-Career Members to join the next IAU Early-Career Summer talk by Dr. Kaleb Alho on Friday, 21 August 2026.

Cultural Astronomy in the Amazon: Intercultural Science Education and the Astronomical Knowledge of Amazonian Riverside Communities
(in Portuguese)

📅 Date: Friday, 21 August 2026
🕒 Time: 14:00 UTC

Join Zoom Meeting:
https://us02web.zoom.us/j/85830837441?pwd=I9ydy5acwzGzfEHd2ZLwSR0UxNX7j2.1

This series celebrates excellence in astronomy by bringing together IAU Prize Winners, who will share the research that earned them international recognition. Through these talks, participants will gain insight into cutting-edge science, the journey behind award-winning research, and the experiences of outstanding early-career astronomers from around the world.

The IAU is pleased to announce the establishment of two new Centers in the network of the IAU Office of Astronomy for Ed...
17/08/2026

The IAU is pleased to announce the establishment of two new Centers in the network of the IAU Office of Astronomy for Education (OAE): the OAE Center Thailand, hosted by the National Astronomical Research Institute of Thailand (NARIT), and the OAE Center UAE, hosted by the Sharjah Space and Astronomy Hub (SSAH) at the University of Sharjah.

The new Centers will be part of the OAE’s global network of institutions working to advance the use of astronomy for education in schools worldwide.

https://www.iau.org/IAU/News/Ann2026/OAE-new-centers-Thailand-UAE.aspx

The next IAU Early-Career Summer Talk Series is by Dr. Hila Glanz, IAU PhD Prize Winner 2025.📅 Date: Friday, 14 August 2...
12/08/2026

The next IAU Early-Career Summer Talk Series is by Dr. Hila Glanz, IAU PhD Prize Winner 2025.
📅 Date: Friday, 14 August 2026
🕒 Time: 20:00 UTC/ 13:00 PDT

The series is an initiative of the IAU Early Career Working Group. It celebrates excellence in astronomy by bringing together IAU Prize Winners who will share the research that earned them international recognition. Through these talks, participants will gain insight into cutting-edge science, the journey behind award-winning research, and the experiences of outstanding early-career astronomers from around the world.

https://us02web.zoom.us/j/83866401277?pwd=9bVLXZNAquwNlsE8e1I6pdTNVxhPnj.1

We encourage all IAU Early-Career Members to join the talk. Whether you are looking to broaden your scientific horizons, learn from leading researchers, or connect with fellow members of the global astronomy community, we hope you will be part of this series.

IAUJuniorMember

Stand beneath a clear night sky and something often shifts. Worries can feel a little smaller, the mind becomes quieter,...
06/08/2026

Stand beneath a clear night sky and something often shifts. Worries can feel a little smaller, the mind becomes quieter, and there is space to breathe. That experience lies at the heart of the Astronomy for Mental Health initiative run by the IAU Office of Astronomy for Development. It is a research-backed program that uses the awe-inspiring nature of the cosmos to create settings for self-exploration and reflection.

The IAU OAD is running the first ever online facilitator training session that will support you to leverage the inspirational power of astronomy to enhance well-being.

This training is intended to equip individuals with practical facilitation skills but is not meant as a clinical intervention training. Participation does not confer a professional qualification, certification, or authority to practice as a mental health professional or representative of the IAU OAD.

Open to anyone - no clinical background or telescope is required.

https://mentalhealth.astro4dev.org/facilitator_training/

  is back!From 1-4 October 2026, communities around the world are invited to organise public astronomy activities as par...
05/08/2026

is back!

From 1-4 October 2026, communities around the world are invited to organise public astronomy activities as part of this international celebration coordinated by the IAU Office for Astronomy Outreach.

This year’s theme, A New Perspective on the Solar System, invites us to explore how space missions, new observations and scientific research continue to transform what we know about our cosmic neighbourhood.

Would you like to participate?
Organise an observation night, public talk, workshop, exhibition or another astronomy activity for your community. Events can be held online or in person and can be designed for audiences of any age or level of experience.

Register your event on the IAU Outreach website and add your community to the global map of 100 Hours of Astronomy activities.
- 1-4 October 2026
- Open to organisers around the world

https://iauoutreach.org/global-projects/100-hours-of-astronomy

The IAU is at the 2026 COSPAR Assembly this week. The IAU President, Prof W***y Benz, and IAU CPS attended a special eve...
03/08/2026

The IAU is at the 2026 COSPAR Assembly this week. The IAU President, Prof W***y Benz, and IAU CPS attended a special event today on the theme of the "Dark and Quiet Sky".

If you are COSPAR, meet us at the IAU exhibition to learn about our programs and opportunities for involvement.

The Committee on Space Research is a global community dedicated to space science and research.

https://cospar2026.org/

IAU Early-Career Summer Talk Series Join us for the inaugural talk of the IAU Early-Career Summer Talk Series, a new ini...
27/07/2026

IAU Early-Career Summer Talk Series
Join us for the inaugural talk of the IAU Early-Career Summer Talk Series, a new initiative of the IAU Executive Committee Working Group of Early-Career Members.

The series celebrates excellence in astronomy by bringing together IAU Prize Winners, who will share the research that earned them international recognition. Through these talks, participants will gain insight into cutting-edge science, the journey behind award-winning research, and the experiences of outstanding early-career astronomers from around the world.

We are excited to begin the series with our first talk by Dr. Mor Rozner on Friday, 31 July 2026.

📅 Date: Friday, 31 July 2026
🕒 Time: 09:00 UTC/ 10:00 BST

IAUJuniorMember

https://us02web.zoom.us/j/82289190072?pwd=E7jsDcp8p9LA1YklpF7YyNR4XZSePF.1

The 2026 IAU-ORAS International Workshop on Professional-Amateur Relations in Astronomy will take place from October 5 -...
23/07/2026

The 2026 IAU-ORAS International Workshop on Professional-Amateur Relations in Astronomy will take place from October 5 - 8, 2026 in Pennsylvania, USA.

It will bring together and facilitate collaboration between professional and amateur astronomers. Working together, professionals and amateurs can advance scientific discovery as well as engage many from the public in modern astronomy research practices.

Open to professional astronomers, amateur astronomers, astronomy educators, university or high school students , astronomy equipment/software providers, and others.

https://iau.org/Iau/Science/Scientific-Meetings/IAUM2026/Pro-Am-Workshop2026.aspx

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