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.

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.

Join us online to learn basic astronomy that you can do on your own from your backyard! With the moon waxing in the evening sky, this is the perfect time to watch the terminator slide across the giant and ancient lunar basin of Mare Imbrium.

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

No-Go for Staurday due to clouds. We're sad to say that that concludes out 2023 season. We hope to see you next year in April!

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

Join us for an evening of free public stargazing along the north shore of Lake Ontario at Millennium Square. Observe the Moon, stars and Saturn at its best through our telescopes!

Join us for an evening of free public stargazing along the north shore of Lake Ontario at Millennium Square. Observe the Moon and stars through our telescopes! (We might even catch Saturn if it rises high enough before midnight.)

Are aliens real? What are UFOs? Are there planets that can support life? Get your answers and more at our symposium on extraterrestrial life

Come join Alex Innanen as they cover a brief history of Curiosity’s mission, highlight some of its exciting findings, and discuss the challenges of working remotely on another planet.