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24 April

RASC Mississauga: Astronomy Night at the Riverwood Conservancy

Explore the universe with members of the Royal Astronomical Society of Canada. Telescopes will be set up to provide amazing views of the Moon, the planets and more! Meet at the Chappell House Lawn.
21 April

UofT Planetarium: Our Musical Universe (SOLD OUT)

What is the sound of a twinkling star? Can planets keep a beat? How loud was the big bang?
21 April

UofT Planetarium: Underdogs of the Solar System (SOLD OUT)

Showtime: 3:00pm Often, when we think of the Solar System, we think of the planets and the Sun and nothing more. But what about all the other stuff? There are millions of asteroids in the asteroid belt, tens of millions of objects in the Kuiper belt, and probably trillions of objects in the Oort cloud—not to mention the hundreds of moons and dozens of dwarf planets that are members of the Sun’s extended family.
21 April

Ontario Science Centre: International Astronomy Day

Celebrate International Astronomy Day at the Ontario Science Centre!
21 April

North-East Astronomy Forum

http://www.rocklandastronomy.com/neaf.html
21 April

International Astronomy Day

http://en.wikipedia.org/wiki/Astronomy_Day
20 April
20 April

Millennium Square Stargazing Night (GO for Friday)

Everyone is invited to join us and Durham Skies on April 20 for stargazing at the edge of Lake Ontario. Take a free look through different kinds of telescopes (including solar-filtered scopes) to get close-up looks at sunspots, craters on the Moon, Venus, and the springtime constellations. Peer deep into space and try your hand at spotting faint star clusters and nebulae. You can even bring your own telescope along and we'll give you expert advice on how to use it better.
19 April

Thornhill Star Gazing Night

Telescopes will be available to view the Moon, the planet Jupiter with its moons, the planet Venus, and various deep-sky wonders. A local astronomer with a sky pointer will be on hand to trace out constellations. Dress warmly! Please stay close to the walkway to protect the wildflower plantings. Anyone who can help out with a telescope or otherwise is warmly encouraged to do so. Especially if you are bringing equipment, a good place to park is on Charles Lane just west of where it meets Sumner lane.
18 April

S. Walter Stewart Library: Toronto's Astronomical Heritage

In this profusely-illustrated, non-technical presentation, you will discover how Toronto became a "centre of the universe" for astronomical research, education, and outreach, in parallel with the growth of our city and country, from 1840 to the present.
16 April

Astronomy Week Solar Observing

Join us this week if skies are clear!
16 April

Dark Sky Star Party (NO GO)

See the milky way and galaxies with the unaided eye. Point your telescope to find the many dim deep space objects that sprinkle the sky. Away from Toronto's light polution, there is so much to see. We observe from the Long Sault Conservation area, an hour outside of Toronto. We meet around dusk once a month in the parking lot for views only seen in dark sky conditions. We hold this event on the first clear night of our week-long window, so the date and time are determined closer to.