100 Hours of Astronomy 2022


100 Hours of Astronomy

An IAU Outreach Global Project


Join the IAU Office for Astronomy outreach for a 100-hour, round-the-clock, round-the-globe celebration of astronomy aimed at engaging as many people as possible - from children to senior people - with the sky and sharing the wonders of our astronomical surroundings.


From 1 to 4 October 2022, the IAU Office for Astronomy Outreach (OAO) will continue the legacy of celebrating 100 Hours of Astronomy. For this year’s theme, the programme draws inspiration from the OAO’s motto: “Astronomy for Everyone”. It aims not only to celebrate OAO’s 10th anniversary but also to invite amateurs and professional astronomers, teachers, outreach professionals and astronomy enthusiasts from all over the world to collaborate and come together as a community to help make astronomy more inclusive of all Earth’s people.

100 Hours of Astronomy project encourages our global community to host or participate in astronomy outreach events over these 100 hours. The goal is to enable as many people as possible, from children to senior people, to engage with the sky and gain a basic understanding of our astronomical surroundings. There are numerous creative possibilities for activities during these 100 hours, but we especially invite you to either organise a Meet the IAU Astronomers! meet-up or an outreach event as part of NameExoWorlds 2022.

Be safe1, be inclusive and share your event on OAO’s IAU Global Outreach Event Calendar!


Win a telescope and other prizes

The 15 events that best connect communities will win a telescope kindly donated by OAO’s partners Sterren Schitteren Voor Iedereen (Stars Shine For Everyone - SSVI), Leiden University, and BRESSER in a special edition of the Telescopes for All programme. The first 100 events registered for 100 Hours of Astronomy will receive IAU Office for Astronomy Outreach goodies, including printed versions of Communicating Astronomy with the Public Journal. For your event to be eligible, submit it to the IAU Global Outreach Events via this form before 31 September 2022, 23:59 your local time and implement the event during the 100 Hours of Astronomy (1-4 October your local time). More information on the contest can be found here.  

When spreading the word about your event on social media, be sure to use #100HoursOfAstronomy and #IAUoutreach so we can help promote your activity too! 

Stay tuned to OAO’s social media channels (Facebook and Twitter) as we release more information and resources in the upcoming weeks.


Events & Activities



[1] Covid-19 Safety Measures. Please follow the health measures recommended by your country or local area when joining the 100 Hours of Astronomy activities. 

[2] 100 Hours of Astronomy 2021


Suzana Filipecki Martins
International Outreach Officer
Tel: +81 905 9477 087
Email: suzana.filipecki@oao.iau.org 


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