Cloudy or clear, join us for programs including presentations in our Skylab and space-themed arts & crafts (Space Crafts!) and tours of the big telescope. Evening observing - weather permitting through our telescopes on the lawn only.  No direct viewing through the big telescope tonight for crowd safety.

Measuring light pollution of your sky, see www.globeatnight.org

Prude Ranch near Fort Davis, Texas, US See www.texasstarparty.org

See http://www.sciencerendezvous.ca/category/toronto/

Kerry-Ann will be talking about her journey in the intense hobby of astrophotography from 2007 up to 2015 and sharing some of the stories behind the many objects that were captured along with her more recent projects and goals.

The Department of Physics invites faculty, students and the public to our 40th annual celebration of physics. The Welsh Lectures in Physics have been held annually since 1975 in honour of H.L. Welsh, a distinguished former faculty member in the Physics Department. They are the major public event in the life of the Department of Physics and are intended to celebrate discoveries in physics and their wider impact. They are intended to be broadly accessible to an audience drawn from across the university, other academic institutions and the interested public.

Speaker: Lauren Hetherington In 1572, astronomers around the world saw a brilliant supernova which outshone every other star in the sky. It faded from view over the following two years and yet, today, we can still detect light from this ancient stellar explosion. How can this be? The answer lies in light echoes: light reflected by dust far from the initial explosion. Join us for the May AstroTour talk to discover what can we learn from these radiant echoes in space and how it is that they often look like they’re moving faster than the speed of light.

The visionary Oscar-winning writer and director of Gravity introduces Stanley Kubrick's science-fiction masterpiece.

Dr. Lisa Esteves, University of Toronto

Amanda Peet, University of Toronto Four decades ago, Stephen Hawking posed a paradox about black holes and quantum theory that still challenges the imaginations of theoretical physicists today. One of the most promising approaches to resolving the "information paradox" (the notion that nothing, not even information itself, survives beyond a black hole's point-of-no-return event horizon) is string theory, a part of modern physics that has wiggled its way into the popular consciousness.

Is our universe the only one? How do we prevent a zombie plague? Will biometrics eliminate privacy altogether? Will climate change put fish in hot water? Should we trust the machines? Join York University professors Matthew Johnson, Jane Heffernan, Demian Ifa, Sapna Sharma and Edward Jones-Imhotep in a conversation with CBC Radio’s The Current host Anna Maria Tremonti on five big questions for the next 50 years.

A space-themed concert of choral music, directed by Tom Bell, and featuring visuals and commentary by astronomer John Percy (University of Toronto). ASLAN Space Concert promo video (YouTube)