The Frontiers of Cosmology

Here’s a fascinating description of what theoretical cosmologists are thinking about these days:

WHY DOES THE UNIVERSE LOOK THE WAY IT DOES?
A Conversation with Sean Carroll

This seems on the one hand a very obvious question. On the other hand, it is an interestingly strange question, because we have no basis for comparison. The universe is not something that belongs to a set of many universes. We haven’t seen different kinds of universes so we can say, oh, this is an unusual universe, or this is a very typical universe. Nevertheless, we do have ideas about what we think the universe should look like if it were “natural”, as we say in physics. Over and over again it doesn’t look natural. We think this is a clue to something going on that we don’t understand…

(via 3qd)

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One Response to “The Frontiers of Cosmology”

  1. I was looking at Karen’s blog and a little part of me died when she had to explain who Fermi was.

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