Physicist Patricia Burchat sheds light on two basic ingredients of our universe: dark matter and dark energy. Comprising 96% of the universe between them, they can’t be directly measured, but their influence is immense. (Recorded February 2008 in Monterey, California. Duration: 16:09)
Watch Patricia Burchat’s 2008 talk on TED.com, where you can download this TEDTalk, rate it, comment on it and find other talks and performances from our archive of 275+ TEDTalks — including many more talks on physics.
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