Capturing a meteorite or nuclear explosion on the cameras they had would have been almost impossible anyway, it would probably just result in a completely overexposed white photo, like trying to photograph the Sun.Not quite : They had manual film camera, not modern ones. No automatics settings. If the camera was set to take day-time picture, the picture would be overall under-exposed. Still, it's true the core of the light spot could be over-exposed, but not automatically depending on the light.
A nuclear explosion might have over-exposed quite a large portion of the picture, but a meteorite would not.