Free,self-guided tours of the DDO resume 1-5 PM on May 31st, the 90th anniversary of the RHDDO!

We are piloting a new City Star Party at Long Branch Park to catch universe from within the city limits. If you don't have a telescope then you will find many astronomers who would love to share a view.

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

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!

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

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

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

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

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