The concept of a "second big bang" is speculative and hypothetical, as our current understanding of the Big Bang theory suggests that it was a unique event that initiated the expansion of the observable universe. However, if we consider a hypothetical scenario in which a second big bang were to occur, it would depend on the specific nature and mechanisms of that event.
In the standard Big Bang model, the universe underwent rapid expansion and cooling, resulting in the formation of elementary particles, atoms, galaxies, and other cosmic structures. Over time, the universe has continued to evolve through various processes like cosmic expansion and the formation and evolution of stars and galaxies.
If a second big bang were to occur, it could potentially lead to the creation of a new universe or region of space-time, separate from our own. In such a scenario, it is unlikely that any physical objects or structures from the original Big Bang would directly survive into the new universe.
However, it's important to note that our knowledge and understanding of such speculative events are currently limited. The nature and consequences of a hypothetical second big bang are subjects of theoretical and hypothetical models, and further research and scientific advancements would be needed to provide more concrete insights into these possibilities.