Cillian Murphy (28 Days Later) plays theoretical physicist J. Robert Oppenheimer, the man known as the “father of the atomic bomb”, in writer/director Christopher Nolan‘s upcoming film Oppenheimer, which is set to reach theatres on July 21st. Today, a poster for the film has been unveiled, and it features Murphy’s Oppenheimer, with his destructive creation behind him. You can check it out at the bottom of this article.

Based on the Pulitzer Prize-winning book American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer by Kai Bird and Martin J. Sherwin, Oppenheimer is an IMAX-shot epic thriller that thrusts audiences into the pulse-pounding paradox of the enigmatic man who must risk destroying the world in order to save it.

Murphy is joined in the cast by Emily Blunt (A Quiet Place) as Oppenheimer’s wife, biologist and botanist Katherine “Kitty” Oppenheimer; Matt Damon (The Bourne Identity) as General Leslie Groves Jr.