Everything in this[0] list is thought to be stable. The rest will eventually decay into those. If proton decay exists then everything will eventually decay into

Everything in this[0] list is thought to be stable. The rest will eventually decay into those. If proton decay exists then everything will eventually decay into something lighter such as pions and positrons (we are talking 10^36-10^43 years). See also [1] [0]: https://en.wikipedia.org/wiki/List_of_nuclides#Theoretically_stable_nuclides https://en.wikipedia.org/wiki/List_of_nuclides#Theoretically... [1]: https://en.wikipedia.org/wiki/Timeline_of_the_far_future https://en.wikipedia.org/wiki/Timeline_of_the_far_future