Is it true that 'during' a nuclear reaction such as in our sun that there is a (period of time?) in which matter is in a state of chaos? I ask for a reason. IF IT WERE SO that 'matter' was in a state of chaos, is there a period of time when that space-time cannot be defined as either matter nor as energy? If not, what is the name of that (state?). IF there were such a 'state', would it not 'exist' in places in the whole of (or other parts of) the universe? Does this account for any 'missing' mass?