“Now I am become Death, the Destroyer of Worlds” is the famous quote from the Bhagavad Gita that physicist J. Robert Oppenheimer spoke upon witnessing the first denotation of a nuclear device, as the world entered the new era of nuclear weapons. OPPENHEIMER is Christopher Nolan’s epic drama about Oppenheimer, his work on the Manhattan Project, and his treatment after the war. The biographical drama starts like a historical thriller and ends like a profound warning to the world, all set against the sweep of history that changed the world.

Based on the Pulitzer Prize-winning biography “American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer” by Kai Bird and Martin J. Sherwin, Nolan’s epic film in fact opens with a reminder of that myth of the man who stole fire from the gods and was punished eternally for his deed. OPPENHEIMER explores the theoretical physicist’s life, particularly his work on the WWII race to build a nuclear bomb before the Nazi Germany, known as the Manhattan Project, and then the post-war aftermath, when Oppenheimer, haunted by the world-destructive weapon that he helped unleash on the world, sought to rein in that danger, which pitted him against a military eager to launch the Cold War arms race, making Oppenheimer a target for communist-hunting investigations.

J. Robert Oppenheimer (Cillian Murphy) was the brilliant theoretical physicist who was selected to run the Manhattan Project, the secret U.S. project to beat Nazi Germany to building an atomic bomb. The young physicist is recruited for that job by Lt. General Leslie Groves Jr. (Matt Damon). Oppenheimer seemed an unlikely choice, the New York-born son of a wealthy Jewish family and an autodidact who read literature and poetry, spoke several languages and read the Hindu sacred text, the Bhagavad Gita, in the original Sanskrit, yet Oppenheimer actively seeks the job, eager to help defeat the Nazis, partly because of what was happening to Jewish people in Europe. Oppenheimer shared his family’s left-leaning political views, and even partied with some communists, but none of that was remarkable or uncommon in that time period, when Americans were still unaware of what was really happening in Stalin’s Soviet Union.

Immediately, Oppenheimer realizes the Manhattan Project has an unexpected edge over the Nazis, despite Germany’s over-a-year head start on developing a nuclear bomb. Hitler’s hatred of the Jews will drive the Germans to purge Jewish scientists from their nuclear bomb research, and Oppenheimer, having visited Europe as a student, knows many of the top physicists are Jewish or have Jewish backgrounds or links. Oppenheimer sets out to recruit as many of those Jewish refugee physicists as possible, using Hitler’s hatred against him.

And recruit them he does, including Edward Teller (Benny Safdie), Niels Bohr (Kenneth Branagh), and Hans Bethe (Gustaf Skarsgard), along with Jewish-Americans Richard Feynman (Jack Quaid) and Robert Serber (Michael Angarano). Enrico Fermi (Danny Deferrari) wasn’t Jewish but his wife was, causing them to flee fascist Italy, and he joins the effort too. Although Oppenheimer knew Albert Einstein (Tom Conti), and the two were friends, he did not invite Einstein to join the project, but Einstein does appear in the film at a couple of points, and has an important part in the film’s powerful ending.

For the secret project, Oppenheimer selects a remote location in the New Mexico desert, Los Alamos, near an area he has vacationed many times, a region he loves. The desert landscape creates a perfect canvas for Nolan to build this thrilling chase for the bomb.

The impressive cast also includes Robert Downey Jr as Lewis Strauss, the non-scientist who heads the Princeton academy that includes Einstein. Josh Hartnett as Ernest Lawrence (as in Lawrence Livermore laboratory) and David Krumholtz as Oppenheimer’s friend Isidor Rabi.. Emily Blunt plays Oppenheimer’s wife Kitty, a biologist frustrated by the era’s confining roles of wife and mother, and Florence Pugh as Oppenheimer’s troubled ex-lover, leftist psychiatrist Jean Tatlock. Many other recognizable faces appear, in a host of small roles.

Nolan’s film, perhaps his best, is a true epic and its length is epic too, at about 3 hours, but OPPENHEIMER is so engrossing and tense that one does not feel the running time. This excellent film has much to recommend it – its riveting and significant content, timely message about ethical consequences of technology, its outstanding performances from an impressive cast (particularly Cillian Murphy), its powerful and largely accurate historical storytelling, plus its visual artistry and technical achievements – to mention a few of its admirable aspects, meaning that it is hard to know where to start in describing the film. Those who know Nolan’s work will find that OPPENHEIMER is very much in his wheelhouse, perhaps the film he was always meant to make.

OPPENHEIMER is divided in two parts, which Nolan labels “Fission” and “Fusion,” for the pre-bomb and post-bomb world. The epic starts out as biography and a gripping thriller, as the young Oppenheimer ascends and the Manhattan Project races to build the first atomic bomb. Post-war, it shifts to taut drama about his fall, as the now-famous Oppenheimer is haunted with guilt over giving mankind the power to destroy the world, and seeks use his fame to limit nuclear weapons, which angers the Pentagon, eager to start the arms race, and makes him the target of a investigation in the rising tide of the Cold War and a shifting political climate. The pivot point between these two parts is the testing of the first nuclear device, Trinity, in which what had been theoretical suddenly becomes horrifying reality, prompting that famous quote from Oppenheimer.

The film jumps back and forth in time, as Nolan film’s sometimes do, and has three threads it follows. But there is no trouble following the narrative, even if the significance of a single scene might not be immediately clear, and the director aids that by presenting one of these threads is in black-and-white. Two of the thread are focused on Oppenheimer, before and after the Trinity nuclear test, while the third, in black-and-white, is centered on a Congressional hearing to confirm Lewis Strauss for a cabinet-level post. What that thread has to do with the story is not clear until later in the film, but it’s significance is powerful.

From the start, ethical and moral questions are part of the equation. Why try to create the most destructive weapon ever seen? In one scene, the physicists debate that question but one fact looms over all: Hitler’s Germany is already working on such a weapon. If they can’t be stopped, the next best thing is to get the weapon first. “I don’t know if we can be trusted to have such a weapon but I know the Nazis can’t,” Oppenheimer says in the film.

The film’s pivotal moment is the test of the first nuclear device, the Trinity test, where what had been only theoretical becomes devastatingly real, and changes the world forever. It is a heart-stopping, showstopper sequence that is the cinematic highlight as well as pivot point of the film, where the realization of the true significance of what they have done causes Oppenheimer to utter that famous quote. Nolan handles this immersive sequence with brilliance, giving the audience an unsettling feeling of being there in the moment. The lack of awareness of the danger of radiation actually poses is one reason some scenes are so harrowing to watch.

The scenes of the detonation are riveting but the film does not include footage of Hiroshima and Nagasaki, as the story is told from Oppenheimer’s view and it is not something he witnessed. Once the two bombs are created, they are whisked away, and Oppenheimer learns about their use and targets the same time and way as everyone else- on the radio. Instead, there is a sequence after the bombs are dropped, where Oppenheimer speaks to the Manhattan Project scientists and staff. As he speaks, shots of the jubilant people in the crowd sometimes slowly morph into images that suggest the bombs’ victims, a haunting, horrifying effect that reflects Oppenheimer’s inner turmoil at that world-changing moment.

Post-war, Oppenheimer finds himself suddenly famous but consumed with guilt, and tries to use that fame to press for limits on nuclear weapons, hoping the horror of the atomic bombs will put an end to all wars. But not everyone has grasped how the world has been transformed by the new technology, and Oppenheimer fails to see the shifting political landscape of the coming Cold War, making him a target.

The post-war second half adopts a deeper, more thoughtful tone, more like a courtroom drama, as it examines how Oppenheimer was treated after the war. Suddenly, Oppenheimer is world famous, and the scientist tries to use that fame to press the government of the nation he served so well to take seriously the danger of new power unleashed on the world. He wants them to grasp, as one character notes in the film, that this is not a weapon but a new reality for the world. But even after Hiroshima and Nagasaki and the devastating effects of ionizing radiation emerged, many do not see it. Instead, Oppenheimer’s activities, particularly his opposition to the development of a hydrogen bomb, angers the Pentagon, focused the dawning Cold War and arms race.

The film basically gets the history and science right, although it is careful not to overload the audience with the latter. However, this is important to note this is basically biography, told from the subject’s view, and not a definitive exploration of the Manhattan Project and the resulting bombings. That means that some may feel that there are things it overlooks or doesn’t cover in sufficient depth but historical completeness was never the intent of the film. As the film depicts, Oppenheimer did not pick the targets, and after the Trinity test, all control is taken out of his hands. Oppenheimer learns about the bombs dropped on Hiroshima and Nagasaki the same way every American did, on the radio.

Much of the reason the film is so immersive and gripping is how Nolan shot the film, which is analog, on 65mm film in large-format15-perf IMAX, with ten times the resolution of standard film, and the highest resolution film ever used. This is a must-see epic that is best seen on an large IMAX screen. In 19 lucky locations around the U.S., it is also being shown in 70mm format, the best choice.

Oppenheimer’s lack of understanding of the political shift underway post-war as the Cold War dawns is illustrated in a scene where he meets President Truman (Gary Oldman). The physicist wants to take the opportunity to speak out against developing the more-powerful hydrogen bomb, but Truman isn’t open to that topic. Frustrated, Oppenheimer tells Truman he feels he has “blood on his hands” a grave error in speaking to the President who ordered the dropping of those bombs, who abruptly ends the meeting.

The scene also illustrates the way in which Oppenheimer became his own worst enemy in the post-war world he helped create, as well as the target of an angered Pentagon, a theme further expanded as Oppenheimer faced an investigation about renewing his security clearance, where questions about his pre-war left-leaning political associations, once considered inconsequential, were raised anew in the commie-hunting atmosphere. The film culminates in a powerful sequence that brings all its threads together and leaves us stunned.

OPPENHEIMER seems a sure thing for Oscar nominations, an engrossing, brilliant epic that mixes a rise-and-fall biography of a complicated genius, with tremendous ticking-clock historical thriller followed by a revealing drama about a struggle over a technology with the power to destroy the humankind, and the ethical choices around it.

OPPENHEIMER opens Friday, July 21, in theaters.

RATING: 4 out of 4 stars