11 April DDO Astronomy Speaker's Night - What's Inside a Rocky Planet? - April 2025 Experience a presentation led by astronomy experts and researchers and tour the observatory.
4 April DDO Astronomy Family Night - April 2025 - Lyrids - April Showers Families will be introduced to the wonders of astronomy through a presentation on a variety of exciting astronomy topics, followed by age-appropriate celestial activities!
3 May DDO Global Star Party - International Astronomy Day! Celebrate International Astronomy Day with a Global Star Party at the Richmond Hill David Dunlap Observatory.
16 April RASCTO Speaker's Night: The Canada-France-Hawaii Telescope: a Journey through Space and Time [Online Only] Join us as Dr. Nadine Manset, Director of Science Operations at CFHT explores the Canada-France-Hawaii Telescope.
28 March EAR 2025 - Learning Science: One Misconception at a Time Explore how people learn science and how astronomers make discoveries with Pierre Chastenay as he shares engaging methods for teaching astronomy.
19 March RASCTO Speaker's Night: An Educational Guide to AICO's QUAIL Telescope [Online Only] Join us as Alex Jude, BSc candidate, science educator, York University explores the AICO's QUAIL Telescope.
1 March DDO Astronomy Speaker's Night -Seeing Double (Stars) - March 2025 Experience a presentation led by astronomy experts and researchers and tour the observatory.
19 February RASCTO Speaker's Night: The Shock of Discovery: JWST, Exoplanet Science, and AICO [Online Only] Join us as Aiden Weatherbee, AICO/ Space Engineering, York University talk about how JWST has transformed nearly ever field if Astronomy .
24 October Millennium Square Public Star Party - October 24 or 25, 2025 (NO-GO for October) Join us for an evening of free public stargazing along the north shore of Lake Ontario at Millennium Square.
27 September Millennium Square Public Star Party - September 26 or 27, 2025 (GO for Saturday) Join us for an evening of free public stargazing along the north shore of Lake Ontario at Millennium Square.