Olivia Thirlby, known for films like 'Juno' and 'Dredd', has joined the cast of Christopher Nolan's 'Oppenheimer'. Olivia will be seen sharing screen space with Cillian Murphy, Robert Downey Jr, Emily Blunt and Rami Malek in the upcoming project. It's based on the life of American physicist J Robert Oppenheimer and his role in the development of the atomic bomb.