Stars vary in brightness due to a number of different astrophysical processes. We'll cover the main types, share some examples to monitor with unaided eyes, binoculars, and any size of telescope.

The Origins Institute in partnership with the McMaster Alumni Association invite you to an online public lecture with Dr. Hari Kunduri, Associate Professor in the Department of Physics and Astronomy. Tune in as Dr. Kunduri explains what exactly a black hole is, and how we have come to have a reasonable theoretical understanding of objects that cannot be seen or heard.

In this profusely-illustrated non-technical presentation, learn how the universe is as amazing, wondrous, and awe-inspiring as anything you may encounter in science fiction or video games — and it's real! Lots of time for questions and discussion — on any aspect of astronomy that you wish! Led by John Percy, Professor Emeritus at the University of Toronto, in Astronomy & Astrophysics, and in Science Education. Drop-in. Call us at 416-393-7668 for more information.

Explore the Universe - from the comfort of your home! During these family-friendly sessions, a DDO Astronomer will answer your questions about the observatory, astronomy and space, telescopes, and the motions of the sky using powerful astronomy software and eye-catching visuals! Only one registration per household is required. Deadline to register for this program is Wednesday, September 28, 2022 at 3:00pm. Prior to the start of the program you will be emailed information on the virtual program links and any specific information relating to your program.

The best kind of trivia is astronomy trivia!

The little constellation of Delphinus, the Dolphin, swims the autumn evening sky. It is easy to identify with unaided eyes, can be explored in binoculars, and has many interesting stars and deep sky targets for telescopes of any size.

The Toronto Centre is participating once again at the hugely popular (and entertaining!) Pumpkinville festival run by the Town of Ajax at beautiful Greenwood Conservation Area. In addition to our information tent, we will set-up solar telescopes. The Sun is quite active now, so we're sure to have sunspots to examine up close!! Visit Ajax's website for more details about the festival and free shuttlebus service.

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!

Take a guided tour of the invisible universe on Dark Matter Night. In a hybrid event (in-person and live webcast) on October 26, dark matter researchers Katie Mack and Ken Clark will share insights into the ubiquitous, mysterious matter that makes up the majority of stuff in our universe.

Speaker: Dr. John Percy, University of Toronto