Join us for an evening of free public stargazing along the north shore of Lake Ontario at Millennium Square.

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

Celebrate International Astronomy Day with a Global Star Party at the Richmond Hill David Dunlap Observatory.

Our monthly City Star Party is the place to catch universe from within the city limits at Bayview Village Park. If you don't have a telescope then you will find many astronomers who would love to share a view.

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.

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

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

Join us for an evening of free public stargazing along the north shore of Lake Ontario at Millennium Square.

Our monthly City Star Party is the place to catch universe from within the city limits at Bayview Village Park. If you don't have a telescope then you will find many astronomers who would love to share a view.

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.

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

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!