Christopher Nolan says his next film Oppenheimer uses practical effects to depict a nuclear explosion.

We thus took on the challenge of, instead of looking at supernovae, studying the expansion of a classical nova explosion, since this process is expected to develop within approximately a human ...

In a nova event, a white dwarf star pulls in solar material from a nearby red giant. When the heat and pressure get too high, the result is a thermonuclear explosion. That makes the white dwarf ...

But with his next film “Oppenheimer” he’s taking that challenge to the extreme by bringing a nuclear explosion to life “without the use of computer graphics.” ...