Light is the definition of this.** The farthest distance of our universe, the edge of existence per se, is defined by how far light as traveled Since, presumably, light started at the big bang*** just like everything else and has been going since then, and some of it just keeps going without hitting anything...and that is the edge of the universe. The edge of what exists. The edge of what contains all existent particles and waves and energy and what-have-you.
Hypothetically...the edge of what we cannot see is the beginning of what is.
I mean that in both senses...at the edge of where light reaches is the edge of what exists. And at the edge, the edge of existence, the edge of light, the edge of the universe: there, as the universe expands, the big bang is happening right now in some way and things are coming into being there.
At every moment, somewhere, genesis is happening. New creation is taking place. God is making the universe...now, still.
Holy crap, God is big, and creative.
All of this is based upon reading a recent National Geographic article I found on Google Plus, about a new supernova discovered which "occurred in the early universe—less than four billion years after the big bang." Wow.
(Note: Please don't send me angry comments on this post. If you disagree with anything I said, you may respectfully comment. I'm not trying to offend anybody, and if you're offended by any of the content, then accept my apology or calmly and equitably explain your point of view. I am open to hearing new ideas.)
* I do not think there is any disunity between the scientific and biblical accounts of the start of the universe. In fact, when I read my Bible I get excited because I'm reading a literary account of something I've heard of in scientific terms too. It's like approaching the same thing from different ends: one person started with the history to explain the meaning of what is and of humanity; someone else started with what is and with humanity and worked back to figure out the history of how it call got here. Just as our brains were made by God, science is a highly respected and God-glorifying pursuit, in which we begin to uncover and understand bits of the very complicated created universe. God LOVES being discovered, being known. Science is another way of meeting him. And science is good, too, because it humbles us and makes us realize how little we actually know or can be sure of. It's always good to have an honest idea of our humble abilities.
** In some way I do not really understand. Light is hard to wrap your mind around (pun intended). Oh, and when I first heard about this, not only was the science geek side of me really into it, the biblical geek side of me instantly thought, "So when Jesus says, 'I am the light of the world'..."
*** See? I told you science and scripture are mutually approving. Genesis 1:3 right there: the first thing that had to be for there to BE anything.