I often think about the origin of the Universe, with no religious connection. If it could have evolved spontaneously, and if there could be complete nothingness at one time and if nothingness is possible. If there was empty space, then empty space is something. Is space infinite? According to Big Bang theory, time did not exist before it occurred. This is very difficult to imagine. I cannot accept a supernatural creation of the universe or anything supernatural.
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http://www.esi-topics.com/brane/interviews/DrLisaRandall.html
excerpt>> the universe we live in is the Planck brane, which localizes the graviton. Another is that we live on a second brane, which is the case where we discussed the hierarchy problem. We generally assume that we live on a brane, but it may not be the brane on which gravity is concentrated. Suppose that gravity is highly concentrated near what I'll call the Planck brane. So gravity is concentrated on one brane, the Planck brane, and we live on a second brane, not precisely on top of the first brane but a little apart. Gravity on our second brane would appear to be weak. And that's precisely what we wanted to explain: why gravity appears to be so weak. That's the hierarchy problem—why gravity is so weak. And this follows from the key insight that we don't actually have to talk about how to get a huge mass scale; we can talk about why gravity is so weak.
Physics: Lisa Randall - Who's Next - Newsweek - MSNBC.com
Looking at the Earth's tiniest particles to explain the mysteries of the cosmos.
http://www.msnbc.msn.com/id/10510773/site/newsweek/ -