Skip to main content
5 May

City Star Party: Bayview Village Park - May 2025

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.
7 May

Recreational Astronomy Night - May 7, 2025

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.
21 May

RASCTO Speaker's Night: The James Webb Space Telescope: a cosmic story for the ages [Online Only]

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

DDO: Sunday Sungazing - April 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!
30 May

Millennium Square Public Star Party - May 30 or 31, 2025

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

City Star Party: Bayview Village Park - June 2025

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.
4 June

Recreational Astronomy Night - June 4, 2025

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.
7 June

DDO Astronomy Speaker's Night - Seeing Double (Stars) - June 2025

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

DDO Astronomy Family Night - June 2025 - Constellations: Connecting the Dots

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!
29 June

DDO: Sunday Sungazing - June 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!
2 July

Recreational Astronomy Night - July 2, 2025

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.
4 July

Millennium Square Public Star Party - July 4 or 5, 2025

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