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20 May

Speaker and Social Nights at the RHDDO and Online

Speaker: To be announced Title: To be announced Abstract: To be announced Who can attend: Everyone Fee: No Charge Locations:
15 April

Speaker and Social Nights at the RHDDO and Online

Speaker: To be announced Title: To be announced Abstract: To be announced Who can attend: Everyone Fee: No Charge Locations:
18 March

RASCTO Speaker's Night: Venus: From Earth’s Twin to a World Apart [Online Only]

Join us as Megan explore long-standing fascination with the planet Venus and how early speculation of an Earth-like world gave way to a very different picture.
18 February

RASCTO Speaker's Night: Cosmic Wonders with the James Webb Space Telescope [Online Only]

Join us as Nathalie Nguyen-Quoc Ouellette explores the discoveries by the James Webb Space Telescope!
29 March

DDO: Sunday Sungazing - March 2026

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

DDO: Sunday Sungazing - February 2026 [Online Only]

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

DDO Astronomy Speaker's Night - February 2026 - Doubles for Couples

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

DDO: Sunday Sungazing - January 2026 [Online Only]

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

DDO How to Use Your Telescope

Do you have a telescope, but don’t know how to use it? Come to the Richmond Hill David Dunlap Observatory can help! Bring your telescope to this workshop to have it assessed and to receive one-on-one instruction on its use outdoors!