Astronomy

Black and white photo of astronomers Clarence Chant and Reynold Young kneeling and sitting, respectively, on the ground. Young is looking through the eyepiece of a long cylindrical-shaped camera positioned perpendicular to the ground and attached to a square tube covered with a cloth-like material. Chant is holding a black rectangular board underneath the tube.

The Einstein Camera

A century ago, a U of T astronomer led a small group of Canadians on a daring expedition to remote Australia. Their mission? To prove the Theory of General Relativity

Sara Seager, who has dark hair and is wearing a red coat, is in profile, peering through the eyepiece of a telescope

The Search for Another Earth

Astronomer Sara Seager believes there are other planets that support life. She’s dedicated much of her career to finding them

She Walks in Beauty

Astronomer Helen Sawyer Hogg not only researched the stars, but explained them in a heavenly manner to students and the public

Image from Grey Matter film poster, depicting the back profile of the director looking at a flag with red, yellow and green colours running vertically

U of T’s World Wide Web

The university’s scholars are collaborating with partners in every region of the globe to answer questions that challenge us all

Illustration of a vivid night sky: a planet at the top with a figure in silhouette small at the centre.

Planet Hunters

With the discovery of hundreds of worlds around other stars, will we find that Earth is not alone in bearing life?

Photo of Mars

Life on Mars?

Scientists are trying to determine if methane in the Martian atmosphere came from living organisms

Planetary Mysteries

Discoveries of new planets outside our solar system are forcing astronomers to rethink theories of how planets form

We Are Star Stuff

A large asteroid could destroy all life on earth. But a "rain" of extraterrestrial debris long ago may have led to the conditions that started it, says a U of T geologist

The Proof Is Out There

In the early 1970s, black holes were just a topic for scientific speculation. Then astrophysist Tom Bolton began pondering the matter