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But the videos aren't just interesting to look at - they're helping develop the simulations for virtual nuclear testing. The US hasn't tested an actual nuclear weapon since 1992, so simulations are the best option.

Over 50 cameras would film each explosion, from all angles, at up to 2,400 frames per second. So, even though we can't conduct these tests any more - as is only right, since they have a devastating effect on the environment, spewing radioactive pollution into the atmosphere - we can still benefit from the tests performed decades ago.

The US hasn't tested an actual nuclear weapon since 1992, so simulations are the best option. When Spriggs was asked a decade ago to write simulations, he found his calculations didn't match records of nuclear tests in the 1950s and 1960s.