Christopher Nolan's "Oppenheimer" Trailer Promises the "Truth" About the Atomic Bomb

Though the plot details are tightly under wraps, the screen adaptation of the theoretical physicist's biography will take place against the backdrop of World War II. The plot will center on Oppenheimer, also known as the "father of the atomic bomb," and his contributions to the Manhattan Project as the head of the Los Alamos Laboratory in New Mexico. The film is based on the Pulitzer Prize-winning 2005 biography "American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer" by Kai Bird and Martin J. Sherwin, which took the authors 25 years of research and writing.

The star-studded lineup for "Oppenheimer" is pretty much any director's dream assembly. The long list of cast members includes Murphy as Oppenheimer; Blunt as the physicist's wife, Katherine "Kitty" Oppenheimer; Pugh as Jean Tatlock, a physician who was a former lover of Oppenheimer; Benny Safdie as Edward Teller, dubbed "the father of the hydrogen bomb"; Downey Jr. as Lewis Strauss; and Damon as Lt. Gen. Leslie Groves.

The stacked cast also includes Rami Malek, Josh Hartnett, Olivia Thirlby, Matthew Modine, Dylan Arnold, Kenneth Branagh, Gary Oldman, Tony Goldwyn, Alex Wolff, Matthias Schweighöfer, David Rysdahl, Josh Peck, Jason Clarke, David Dastmalchian, Dane DeHaan, and Jack Quaid.

"Oppenheimer" will come out exclusively in cinemas on 21 July, 2023 — which is the same date as the "Barbie" movie.

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On 21 July, Universal Pictures released the official poster for "Oppenheimer," which sees Murphy's Oppenheimer silhouetted by a cloud of smoke (from an explosion, no doubt). The poster reveals the movie tagline, "The World Forever Changes."