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17 May

Speaker's Night: "Water, Water Everywhere? A History of the Hunt for Lunar Water from Harold Urey to Artemis and Beyond"

Learn about the search for lunar water, highlighting key missions and technologies, as well as what the future may hold as we move into the Artemis era.
13 May

Doors Open Richmond Hill 2023 at the DDO

Join us at the DDO for a visit of the dome and check out the Administration building for Doors Open Richmond Hill!
10 May

AstroEdu 2023: The Astronomy Education Conference

AstroEdu 2023 will bring together researchers, teachers, and students from across the world to discuss the latest developments in astronomy education at all levels.
9 May

RASC National Society: The Insider's Guide to the Galaxy - Women in Astronomy (ONLINE)

Join us online to learn basic astronomy that you can do on your own from your backyard! We'll share tips on encouraging girls to engage in astronomy and highlight the women of Harvard who laid the foundation of modern astronomy.
7 May

DDO: Sunday Sungazing - May 2023

Safely observe the sun with us! Join us at the DDO for these family-friendly sessions where a DDO Astronomer will answer your questions about our closest star: the sun!
5 May

Clone of Astronomy Family Night - May 2023

Join us for the wonders of astronomy through a presentation on a variety of exciting astronomy topics, followed by an age-appropriate celestial activities and a demonstration of the 74” telescope.
5 May

Astronomy Family Night - May 2023

Join us for the wonders of astronomy through a presentation on a variety of exciting astronomy topics, followed by an age-appropriate celestial activities and a demonstration of the 74” telescope.
4 May

[AstroTours] Mapping our universe in millimeter: what have we learned?

Join us at the May AstroTour! Our May AstroTours features Yilun Guan's talk on mapping the universe, followed by exciting astronomy demos and telescope tours!
3 May

Recreational Astronomy Night - May 2023

Join us for our monthly recreational astronomy night meeting. This is where our members get to show their latest projects or give tutorials and tips on just about everything to do with astronomy.
30 April

DDO: Planetarium Day - April 2023

Enter a Digital Portable Planetarium and take a journey through the universe led by a DDO astronomer.
29 April

Astronomy Speaker's Night: "A Search for Dark Matter in the Cosmic Web"

Learn about the search for elusive dark matter using observations of the cosmic web and the relic radiation from the Big Bang from Dr. Rogers, a Dunlap Fellow at the University of Toronto, tour the observatory and view a celestial object through the 74” telescope
29 April

Millennium Square Public Stargazing 2023 - April (NO-GO for Saturday)

Join us for an evening of free public stargazing along the north shore of Lake Ontario at Millennium Square. Observe the Moon, stars, and an excellent opportunity to observe Venus through our telescopes!