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24 November

Astronomy Speaker's Night - Impact Structures in Ontario

Join us at the DDO as Dr. Mary-Helen Armour speaks about various impact structures in Ontario.
17 November

DDO: Sun Fun! November 2023

Join the David Dunlap Observatory Astronomers for an interactive session where participants will see live and pre-recorded telescope views of the solar surface, learn about our nearest star, and practice safe solar observing by making their own pinhole projector.
22 November

The Giant Planets at the Richmond Hill Public Library

Join us to learn about the surprising features of the gas giants, Jupiter and Saturn, and ice giants, Uranus and Neptune.
27 October

Astronomy Speaker's Night - The Universe Seen in the Eyes of a Fast Radio Burst

Visit a unique historical site in Richmond Hill and experience an engaging presentation led by experts and researchers in astronomy, covering a variety of exciting astronomy topics. After the presentation, participants will tour the observatory and see a demonstration of the 74” telescope pointed to an interesting celestial object for the visitors to view (weather-dependent). Please wear / bring appropriate supplies for being outside. A registered adult must accompany all registered participants under the age of 16.
21 October

DDO Planetarium Day - October 2023

Enter a Digital Portable Planetarium and take a journey through the universe led by a DDO astronomer!
27 September

Stargazing Night - September 2023 (GO for Wednesday)

Bring Your Own Binoculars and observe the sky from the David Dunlap Observatory!
23 September

DDO Planetarium Day - September 2023

Enter a Digital Portable Planetarium and take a journey through the universe led by a DDO astronomer!
28 August

Stargazing Night - August 2023

Bring Your Own Binoculars and observe the sky from the David Dunlap Observatory!
25 July

RASCTO Backyard Astronomy at Richmond Hill Public Library

Have you ever looked up at the night sky and wondered what's out there?
26 August

DDO Planetarium Day - August 2023

Visitors aged 6 and older will enter a Digital Portable Planetarium and take a journey through the universe led by a DDO astronomer.