Astronomy

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

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