Apr 24, 2014
Rashid Auditorium, 4401 Hillman Center
David Spergel, the Charles Young Professor of Astronomy on the Class of 1897 Foundation and Chair of the Department of Astrophysical Sciences at Princeton University, will present "Taking the Universe's Baby Picture."
Abstract: Observations of the microwave background, the left-over heat from the big bang, probe the first moments of the universe and provide one of the most important tests of our basic cosmological model. Over the past decade, cosmologists have mapped the variations in temperature that many believe reflect quantum fluctuations during the earliest moments of the universe's history. Other cosmologists interpret these fluctuations as the signature of a pre-big bang universe. The properties of these fluctuations provide our best probe of physical conditions in the early universe, and enable cosmologists to accurately determine the age, composition and shape of the universe.
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Last modified: Apr 2, 2014 12:00:00 AM EDT
Date created: Apr 2, 2014