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Feb 14, 2007 - Supernovae and the Mystery of "Dark Energy" - Dr. Chris Pritchet, UVic The Universe is filled with a mysterious energy that causes its expansion to accelerate. The nature of this "dark energy" (not to be confused with dark matter) is completely unknown, and represents perhaps the greatest challenge to face physics and astronomy in the past century. Canada and France are together leading the world in the observational quest to understand this dark energy, through the Supernovae Legacy Survey. Using observations of faint, very distant supernovae (lookback times of more than half of the age of the Universe), we can probe the geometry of the Universe, and detect the signature of dark energy with a precision that has never before been attained. In this talk, I will focus on the detector and telescopes that make this project possible, the observations, and a simple picture of how our observations constrain dark energy. Presentation - html, Powerpoint (10Mb)
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