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B. New Insight about a Brief History of Time

Narrator: This is Science Today. An international group of physicists have recreated a state of matter that had up until now, only been theorized. Daniel Cebra, a physics professor at the University of California, Davis and collaborator on this project, says by colliding lead ions together inside a European particle accelerator, scientists were able to detect a plasma state of matter believed to exist just after the Big Bang. This in effect sheds some light on a brief history of time.

Cebra:The Big Bang itself isn't directly affecting our life because we have to live with whatever it would like - we can't change it. It's nice to know how it progressed. We really want to know how time began - how, where did we come from? And this gives us the best chance to get back as early as possible and as close as possible to know what the universe was like at the very start of time.

Narrator: Understanding this transition also allows researchers to better understand where some of the universe's initial, non-uniformities came from.

Cebra: That can then be modeled into one's models of cosmological expansion. To get an idea of why the universe looks the way that it does.

Narrator: For Science Today, I'm Larissa Branin.