Stephen William Hawking was an English theoretical physicist, cosmologist, author and Director of Research at the Centre for Theoretical Cosmology within the University of Cambridge. Hawking died in his home in Cambridge this morning. He was 76.

Hawking sought to explain some of the most complicated questions of life while himself working under the shadow of a likely premature death.

This year’s season finale of StarTalk on National Geographic TV was Neil deGrasse Tyson’s interview with Stephen Hawking aired just 10 days ago. In memory of his passing, and in celebration of his life, that episode has been released on YouTube commercial free. Also features astrophysicist Janna Levin, comedian Matt Kirshen, physicist Michio Kaku, and Bill Nye the Science Guy. (46 minutes)

More:

Hawking defied ALS to become pre-eminent physicist – CTV

Why Stephen Hawking was so important to science – CBC

Stephen Hawking: A timeline of his extraordinary life – Globe and Mail