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 – with the sky and sharing the wonders of our astronomical surroundings.

From 1 to 4 October 2023, the IAU Office for Astronomy Outreach (OAO) will continue the legacy of celebrating 100 Hours of Astronomy. This year’s theme is One Planet.  We aim to create an experience that fosters a sense of unity, connection, and togetherness among the public, inspired by the camaraderie astronauts feel when returning from space missions, called the Overview Effect. This series of events will celebrate the beauty of our shared planet and promote global cooperation, environmental stewardship, and a collective commitment to a better future.

Find more information under iau.org