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PHYSICS 161. Introduction to Cosmology and Extragalactic Astrophysics. 3 Units.

What do we know about the physical origins, content, and evolution of the Universe -- and how do we know it? Students learn how cosmological distances and times, and the geometry and expansion of space, are described and measured. Composition of the Universe. Origin of matter and the elements. Observational evidence for dark matter and dark energy. Thermal history of the Universe, from inflation to the present. Emergence of large-scale structure from quantum perturbations in the early Universe. Astrophysical tools used to learn about the Universe. Big open questions in cosmology. Undergraduates register for Physics 161. Graduates register for Physics 261. (Graduate students will be required to complete additional assignments in a format determined by the instructor.) Prerequisite: PHYSICS 121 or equivalent.
Same as: PHYSICS 261

Undergraduate Major Unit Requirements

...199W , MATSCI 161 , MATSCI 164 , ME 112 , ME 131A , ME 140 , ME 141 , PHYSICS 107...

Computer Science

...Credit. Either of the PHYSICS sequences 61/63...of Computer Systems CS 161, Design and Analysis...


Courses offered by the Department of Physics are listed under the subject code PHYSICS on the Stanford Bulletin's ExploreCourses web site .


...Professor, and Applied Physics and Physics) Biology: Patricia...CS 109, and CS 161 must be approved...