The latest astronomical and RASC Toronto Centre news.
Weighing the Universe with a Balloon-Borne Telescope with Mohamed Shaaban
Not only is the Universe expanding, but it’s also accelerating! This revelation implies either our understanding of gravity is flawed or that a mysterious negative pressure known as Dark Energy is driving the expansion.
Truth at the Eyepiece

Since the advent of telescopic astronomy four centuries ago it's been a constant that visual records of observations should only show what is seen at the eyepiece, and no more.

A Short History of the David Dunlap Observatory

A short history of the David Dunlap Observatory located in Richmond Hill, Ontario, Canada just outside the Toronto City border - Canada's largest optical telescope.

We Are All Made of Stardust with Dr. Parshati Patel
Believe it or not, most of the elements in our body are made of stardust. Iron in our blood, calcium in our teeth, oxygen in our body…all of that and more came from stars!
Canadian Women in Astronomy

A brief history of some of the important women actively involved in the advancement of amateur and professional astronomy and astrophysics in Canada over the last century.

The attached PDF contains the notes for Chris Vaughan's The Sky This Month presentation at the Virtual RAN meeting on April 29, 2020.

The Sky This Month for May 2020

Chris Vaughan takes us through a quick detailed tour of what to look for in the night sky for the month of May 2020 while we practice social distancing.

Johannes Kepler

Jerry Vila, a Toronto Centre member, presents a brief history of the life and works of Johannes Kepler, an astronomer, mathematician, and astrologer who lived from 1571-1630.

30 Years of the Hubble Space Telescope

The Hubble Space Telescope has provided amazing images of the universe from its location in Earth orbit for three decades.

Message from Dr. B. Ralph Chou, President of the Toronto Centre (updated June 4, 2020)