Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
Does it remain void and pushes even more or will virtual particles eventually create normal matter?
It's not the case that something needs to be put in there, it's just that space itself is expanding. So if the bit you are watching expand is void then it will still be void, only bigger - you don't get new space, you just get bigger space.