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6 December

DDO Astronomy Family Night - December 2025 - The Blue Marble

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!
30 November

DDO: Sunday Sungazing - November 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!
1 November

DDO Astronomy Family Night - November 2025 - Howl at the Supermoon

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!
26 October

DDO: Sunday Sungazing - October 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 October

DDO Astronomy Speaker's Night - October 2025 - The Stunning View from Planet Earth

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

DDO Astronomy Family Night - October 2025 - It's A Bird, It's A Plane, It's Supermoon!

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!
15 October
24 October

RASC Toronto Centre Fall Winter Star Party at CAO 2025

The cold crisp nights of winter contain many wonderful and bright winter constellations and deep sky objects, but they can come w
4 October

International Observe the Moon Night 2025

Join us for International Observe the Moon Night to learn about lunar science and exploration, take part in celestial observations, and honor cultural and personal connections to the Moon.
20 September

City Star Party: (We are GO for Sept. 20, 2025) Long Branch Park: Fall Equinox

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.