because among some of the materials not eliminated by 5 billion years, there would be some unstable enough to decay in 50 billion years, and these would be just-barely-non-fizzing and could be pushed along a little further by human intervention
Except there aren’t any that are not eliminated by, say, 10 billion years. And even 40 million years eliminate everything you can make a nuke out of except U235 . This is because besides fizzling, unstable nuclei undergo this highly asymmetric spontaneous fission known as alpha decay.
Except there aren’t any that are not eliminated by, say, 10 billion years. And even 40 million years eliminate everything you can make a nuke out of except U235 . This is because besides fizzling, unstable nuclei undergo this highly asymmetric spontaneous fission known as alpha decay.