University of Toronto astronomers are available to visit your school or community group to talk about astronomy and answer questions. Whether you’d like a short discussion about meteors with your grade one class or an in-depth talk on the nature of dark energy for your amateur astronomy group, we’ve got you covered. Best of all, this service is free within the Toronto area (but subject to the availability of speakers).

You can preview the list of speakers below, then click below to request a speaker:

Request a Speaker

Eesha Das Gupta

Eesha Das Gupta

Talk Titles:

A Rookie’s Guide to a DIY Star

What do you do when your object of study is an extremely large, immensely hot and bright ball of gas that is really far and impossible to recreate in a lab on Earth? You just make a computer model of it! This talk is a handy guide for the rookie scientist and science enthusiast — it will walk you through the basics of making a star from scratch.

Stories from the Other Side of The World

Every culture has its own stories and legends recorded in their lore about the night sky. These stories often give us an insight into how humans perceived the world around them before the advent of modern science. This talk delves into South Asian stories about the night sky and their connection to science in Ancient India.

Who Said There’s No Sound in Space?

Sound cannot travel in the vacuum of space. But does that mean there is no sound outside of Earth? From the first sound ever to the most explosive booms — this talk is all about how loud our universe can really be.

Talk Languages:

English, Hindi, Bengali

Eesha Das Gupta is a graduate student at the University of Toronto working towards a PhD in astronomy. She previously received her Bachelor’s degree in physics from Drexel University in Philadelphia. Eesha makes computer models of how stars rotate and how they interact with other stars around them. She also enjoys making alternate tools for communicating astronomy to the public such as an astronomy card game!


Dr. Renee Hlozek

Dr. Renée Hložek

Talk Titles:

The Dark and Beautiful universe

Watching the Fiery Beginnings of the Universe from the Atacama Desert

Why STEM Needs Diversity and What We Can Do to Help

Dark Matter and Dark Energy: Why Are They Different and Why You Should Care!

Talk Languages:

English, French

Renée Hlozek is an Assistant Professor of Astrophysics at the Dunlap Institute for Astronomy and Astrophysics within the Department of Astronomy and Astrophysics at the University of Toronto. Her research focuses on theoretical cosmology and ‘astro-statistics’; she answers questions about the structure of the universe, its initial conditions and its eventual fate. She uses data from telescopes around the world like the Atacama Cosmology Telescope that measures microwave light left over from the Big Bang; and the Large Synoptic Survey Telescope which is currently under construction and will measure the night sky in visible light, scanning the whole sky once every three days. She is a Rhodes Scholar and a TED Senior Fellow, and was named one of the Mail and Guardian’s 200 Young South Africans for 2012.


Max King

Max King

Talk Titles:

Mission to Pluto, from Napkins to New Horizons

Let’s journey to the edge of the solar system to explore Pluto, and learn about how we build the amazing spacecraft that take us to new worlds.

The Hubble Telescope: 100 Years of Light

Learn the full story of the world’s most famous telescope, and the people behind it. We’ll learn about its creation, its discoveries, and its legacy for a peaceful use of outer space.

Talk Languages:


Max King holds a Master’s degree in Aerospace Engineering from U of T, specializing in space systems engineering. He has worked on spacecraft from CubeSats to the Canadarm, and is working on Canada’s contribution to the Artemis missions to the Moon. He is an avid musician, passionate about space exploration, and the public education of science and engineering.

Dr. Ting Li

Dr. Ting Li

Talk Titles:

Discover the Universe with Astronomical Observations

Learn about the amazing discoveries made possible by astronomical observations. From the depths of space to the tiniest subatomic particles, we will explore the universe through the eyes of telescopes and other instruments. Join us to discover the wonders of the cosmos and learn how astronomers use observations to expand our understanding of the universe.

Introduction to Ancient and Modern Cosmology

Gain an understanding of cosmology, both ancient and modern. We will explore the history of how humans have sought to explain the origins and structure of the universe, from ancient myths to modern scientific theories. Join us to learn about the latest discoveries and theories in cosmology, including dark matter, dark energy, and the big bang.

The Biggest Two Mysterious in the Universe: Dark Matter and Dark Energy

Attendees will delve into the mysteries of dark matter and dark energy, two of the biggest unknowns in the universe. We will explore what we know about these phenomena and how they are observed in the cosmos. We will also discuss current theories and ongoing research in the quest to understand these elusive substances.

The Fastest Star Rejected by Milky Way’s Super Massive Black Hole

Attendees will be taken on a journey through space to explore the incredible story of S5-HVS1, the fastest star ever observed to be rejected by the Milky Way’s supermassive black hole. We will discuss the fascinating properties of this star and the implications of its ejection for our understanding of the Milky Way’s central region.

Rivers in the Sky: Milky Way’s Past and Present

Learn about the fascinating concept of “rivers in the sky,” otherwise known as stellar streams. These streams are remnants of dwarf galaxies or star clusters that have been torn apart by the gravitational forces of the Milky Way. We will explore the history of the Milky Way and how these streams can provide insight into its formation and evolution.

Talk Languages:

English, Mandarin

Ting Li is an Assistant Professor at the David A. Dunlap Department of Astronomy & Astrophysics. Her research focuses on near-field cosmology. In particular, she studies the stars in the Milky Way Galaxy and nearby galaxies to understand how they form and to understand the nature of dark matter. She specializes in analyzing large data sets from imaging surveys of wide areas of the sky and also performs traditional astronomical observations with the largest optical telescopes all over the world. Ting also builds astronomical instruments and contributes to infrastructure work for large-area sky surveys.


Dr. Christopher Matzner

Talk Titles:

Cosmic origins of everyday life

Spectacular deaths of massive stars

Star clusters: engines of galactic turmoil

Giant black holes and their secret lives

Talk Languages:


Dr. Matzner’s broad research involves the births and deaths of stars and the life cycle of matter within galaxies. His recent projects focus on the creation of stellar binaries and star clusters, the energetic motions caused by giant nebulae, supernova explosions and gamma-ray bursts, and how some unlucky stars get shredded by black holes. Click to visit Dr. Matzner’s web site.

Dr. Ilana MacDonald

Talk Titles:

Gravity: From Falling Apples to Ripples in Spacetime

The ideas about why things fall to the ground or move in the sky have changed throughout history. In this talk we will learn about how the ancients explained gravity and how those ideas evolved into our current understanding.

Scales of the Universe

How big is the Earth compared to the Sun? How far is the nearest star? What’s the farthest thing we can see? In this talk, we will find our place in the universe by exploring it at different scales.

All You Ever Wanted to Know about Black Holes

Black holes are some of the strangest objects in the universe, collapsed points of infinite density from which even light cannot escape! We will learn what they are, how they form, and where you can find them. Watch Ilana’s Cosmos from your Couch episode on this topic here!

The Odyssey of the Voyagers

In 1977, two spacecraft were launched from the Earth with the mission to explore the planets of our outer solar system. In this talk, we will follow their voyages through space, learn about their discoveries and their current legacy.

Talk Languages:

English & French

Ilana MacDonald grew up in a small town in rural Quebec where she was inspired by the clear night skies and her father’s “midlife crisis telescope” to study Astronomy. She completed her Bachelors of Science in Physics at Bishop’s University, and her Doctorate in Astronomy & Astrophysics at the University of Toronto, studying under Prof. Harald Pfeiffer. Her doctoral research topic was to test the accuracy of models of ripples in spacetime, that is, gravitational waves, from binary black holes for detectors such as LIGO. She currently is in charge managing of the largest Astronomy courses at the University of Toronto, as well as creating and presenting planetarium shows..

Daniella Morrone

Talk Titles:

Finding our place in the cosmos: How the Earth, the Sun, and the Solar System compare to the rest of the known universe

We learn about space from a very young age. Through school, we study the Sun and the Solar System. But how does our cosmic neighbourhood compare to what’s beyond? Do we pale in comparison or are we unique in ways that we never thought possible? In this talk, we shed some light on where our Solar System stands on the grand scale of the universe.

Astronomy in the Movies: Fiction vs. Reality

Representation of astronomy is everywhere in the media. Whether it’s a first contact science fiction movie, or a historical adaptation of the space race, we are bombarded with content that are not necessarily accurate representations of what astronomy is. In this talk, we debunk some common movie tropes around astronomy representation and investigate what real life astronomy actually looks like.

Talk Languages:


Daniella Morrone is a recent Bachelor’s graduate from the University of Toronto, completing the Specialist program in Astronomy & Physics, as well as Minor programs in Mathematics and French Language. Daniella is currently working in astronomy outreach at Discover the Universe, creating educational content geared towards teachers and educators about the upcoming total solar eclipse in 2024, and at the Canadian Astronomical Society (CASCA) as the coordinator of the Westar Program. Daniella also enjoys volunteering in other astronomy outreach initiatives through UofT and externally, and is passionate about making astronomy a field that is accessible to all.


Dr. John Percy

Talk Titles:

The Amazing Universe

The universe that astronomers have discovered and studied is just as exciting as the imaginary universe in science fiction and video games — and it’s real!

Toronto’s Astronomical Heritage

A presentation on how the history of astronomy in Toronto connects with with the growth of our city and our country. See John’s Cosmos From Your Couch episode on this topic here!

The Birth, Life, and Bizarre Deaths of the Stars

An overview of the birth, evolution, and death of stars, including white dwarfs, neutron stars, and black holes.

Common Misconceptions about the Universe: From Everyday Life to the Big Bang

A tour of the universe, highlighting misconceptions which the public have about astronomical topics. These range from true misconceptions, to problems of astronomical language, to widespread pseudoscientific beliefs, to ones based on a literal interpretation of scripture.

Archaeoastronomy: The Astronomy of Civilizations Past

A presentation on archaeoastronomy a.k.a. cultural astronomy.

Talk Languages:


John Percy is Professor Emeritus at the University of Toronto, in Astronomy & Astrophysics, and in Science Education. His research deals with the nature and evolution of the stars. He is also active in astronomy education, at all levels, throughout the world. He has received many awards for his work in education and outreach, most recently the 2013 Education Prize of the American Astronomical Society.



Dr. Michael Reid

Talk Titles:

Misconceptions about the Big Bang

The Big Bang Theory is backed by a century of evidence. Yet, it’s one of the most frequently misunderstood ideas– even by experts! In this talk, we’ll explore what the Big Bang Theory does and doesn’t say about tricky topics such as how and where the universe began, what shape it is, what’s outside it, and how it will end. Suitable for grade 9 through adults.

Black Holes

What is a black hole? Where do they come from? How do we know for sure that they exist? What would it be like to fall into one? This introduction to black holes covers all the essentials. Suitable for grades 6 through adults.

The Lives and Deaths of Stars

Did you know that some of the stars you can see in the sky are younger than our species, while others are nearly as old as the universe itself? In this visually rich talk, we’ll use images from the latest telescopes to explore the births, lives, and spectacular deaths of stars. Suitable for all ages.

The Search for Another Earth

Are we alone in the universe? The search for answers to this question is a central theme of modern astronomy. In this talk, I show how astronomers using the latest telescopes such as TESS and JWST are getting closer and closer to being able to declare that we’ve found “another Earth.” Suitable for all ages.

Talk Languages:


Dr. Reid’s research area is star formation–the process of turning vast clouds of gas and dust into new stars. He teaches several classes in introductory astronomy for non-scientists and frequently gives public talks on topics spanning all of astronomy. He will happily create a new presentation on a topic of your choice, or can deliver one of his prepared favourites.



Dr. Hanno Rein

Talk Titles:

Exoplanets: Strange New Worlds

Dr. Rein will provide a visual and interactive overview of recently discovered planets outside our Solar System. The audience will learn about their characteristics, what we think we know about their formation history, and how that relates to habitability. Suitable for grades 8 and up.

Talk Languages:


Dr. Hanno Rein wants to find out how planetary systems form. He maintains a large database of all discovered exoplanets, planets outside our own Solar System. Using large super-computers, he is simulating the evolution of planets and Saturn’s rings.


M. Shaaban

Talk Titles:

Weighing the Universe with a Balloon Borne Telescope

The Science of Time Travel

Talk Languages:

English, Arabic

Shaaban is a graduate student in the Department of Physics and the Dunlap Institute for Astronomy & Astrophysics. His research focuses on studying the contents and properties of the entire universe by looking at distant galaxies using a telescope that flies on a giant helium balloon.


Dr. Gustavo Medina Toledo

Talk Titles:

The Milky Way and the exploration of the distant Universe

How are can we understand the Universe if it looks so far from everything that we have ever experienced? We will learn about our place in the Universe, interstellar travel, and the ultimate fate of our Galaxy, in an exciting journey through space and time.

Talk Languages:

English, Spanish

Gustavo Medina Toledo is a postdoctoral researcher at the David A. Dunlap Department of Astronomy & Astrophysics. Gustavo obtained his PhD at the University of Heidelberg in Germany, and he holds a Master’s degree from Universidad de Chile. His research focuses on the exploration of remote regions in the halo of the Milky Way using variable stars as tracers of stellar populations of different ages. He specializes in observational astronomy and the use of large data sets from wide imaging and spectroscopic surveys, which are carried out with large telescopes and state-of-the-art techniques.


Dr. Yanqin Wu

Talk Titles:

Extrasolar planets

The origin of the solar system

Talk Languages:

English, Mandarin, Cantonese

Yanqin Wu is an associate professor of astronomy. She is engaged with studying the formation of Solar system and extra-solar planetary systems. Problems she has studied include, e.g., the survival of Mercury, the formation of Kuiper belt, Pluto and its moons, the migration of Jovian planets in extra-solar systems, and planets detected by the Kepler space mission.