Stephen Hawking · every age

What was Stephen Hawking doing at 68?

Given two years to live at 21, he worked for 55 more

1. c. 2010

   Published The Grand Design

   With Mlodinow. It argued that physics needs no creator, and made headlines.

   Source: en.wikipedia.org

Portrait: Photo: NASA (StarChild), public domain, via Wikimedia Commons · source