Hi, firstly for me this is a great topic.
Three questions.
1. How could they conduct an experiment on 'nothing' as the Casimir experiment seemed to have done ? Surely if there are virtual particles, then there isn't nothing , there is something. Besides, surely its impossibly to create 'nothing' in the first place so that we can test it ?
2. Why has there no been more 'BIG BANGS', from nothing ? If the Big Bang originated from nothing and essentially created the universe, then what is to prevent another random 'BIG BANG' ?
3. The assumption is that time only started with the Big Bang and the assumption now that the universe will not contract by dark energy and will expand indefinitely. If that is the case, then this universe is either unique (IE: first universe not to contract back to nothingness) or it it not the only universe ?
Sorry for my ignorance.