AstroEdu 2023 will bring together researchers, teachers, and students from across the world to discuss the latest developments in astronomy education at all levels.

Join us online to learn basic astronomy that you can do on your own from your backyard! We'll share tips on encouraging girls to engage in astronomy and highlight the women of Harvard who laid the foundation of modern astronomy.

Safely observe the sun with us! Join us at the DDO for these family-friendly sessions where a DDO Astronomer will answer your questions about our closest star: the sun!

Join us for the wonders of astronomy through a presentation on a variety of exciting astronomy topics, followed by an age-appropriate celestial activities and a demonstration of the 74” telescope.

Join us for the wonders of astronomy through a presentation on a variety of exciting astronomy topics, followed by an age-appropriate celestial activities and a demonstration of the 74” telescope.

Join us at the May AstroTour! Our May AstroTours features Yilun Guan's talk on mapping the universe, followed by exciting astronomy demos and telescope tours!

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.

Enter a Digital Portable Planetarium and take a journey through the universe led by a DDO astronomer.

Learn about the search for elusive dark matter using observations of the cosmic web and the relic radiation from the Big Bang from Dr. Rogers, a Dunlap Fellow at the University of Toronto, tour the observatory and view a celestial object through the 74” telescope

Join us for an evening of free public stargazing along the north shore of Lake Ontario at Millennium Square. Observe the Moon, stars, and an excellent opportunity to observe Venus through our telescopes!

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.

Join us online to learn basic astronomy that you can do on your own from your backyard! The spring sky hosts both very bright stars and very dim galaxies. We'll talk about the system astronomers use to measure and report the brightness of celestial objects - from luminosity to absolute and apparent brightness, to surface brightness.