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"The cosmos is all that is or ever was or ever will be. Our feeblest contemplations of the Cosmos stir us—there is a tingling in the spine, a catch in the voice, a faint sensation, as if a distant memory, or falling from a height. We know we are approaching the greatest of mysteries." -Carl Sagan One of the greatest things we can do -- when we study and learn the story of the Universe -- is simply to tell that story, as best as modern science allows us to. Earlier this week, I had a chance to do this in front of a small, intimate audience at the Hand-Eye Supply Curiosity Club here in Portland…

So I gave a public lecture last (Monday) night called, "Afraid of the Dark: How We Know What We Can't See" and videotaped it. Now, I'm pretty good at what I'm doing right now (research in theoretical cosmology), but I'm really good at public speaking and teaching, and here is me telling a public audience all about dark matter, how we know it exists, what makes it different from normal matter, and what I'm trying to do to find it/discover its nature for a good 40 minutes. (The intro and question/answers are cut out). It was a lot of fun; the audience was wonderful, and actually kept me for…