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21 May

RASCTO Speaker's Night: The James Webb Space Telescope: a cosmic story for the ages [Online Only]

Join us as Ethan R. Siegel, Ph.D., explores the James Webb Space Telescope.
3 May

DDO Global Star Party for International Astronomy Day! 2025

Join us for a world-wide live stream of events from here and from around the world hosted from the David Dunlap Observatory!
29 June

DDO: Sunday Sungazing - June 2025

Safely observe the sun with us! During these family-friendly sessions, a DDO Astronomer will answer your questions about our closest star: the sun!
14 June

DDO Astronomy Family Night - June 2025 - Constellations: Connecting the Dots

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!
7 June

DDO Astronomy Speaker's Night - Seeing Double (Stars) - June 2025

Experience a presentation led by astronomy experts and researchers and tour the observatory.
25 May

DDO: Sunday Sungazing - April 2025

Safely observe the sun with us! During these family-friendly sessions, a DDO Astronomer will answer your questions about our closest star: the sun!
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 April

[AstroTours] Live Fast, Die Young: The first stars and their lasting impact on our Universe

Check out the April AstroTour! April AstroTours features UofT PhD Student Sam Berek's talk about the first stars, followed by exciting astronomy demos and telescope tours!
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.