Lecture1slides - 1/22/09 Astronomy 309R - Spring 2009 1...

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Unformatted text preview: 1/22/09 Astronomy 309R - Spring 2009 1 Astronomy 309R Galaxies, Quasars, and the Universe Spring 2009 Please pick up a syllabus and a Department of Astronomy handout! Please sit in the front rows! 1/22/09 Astronomy 309R - Spring 2009 2 What is Cosmology? (Greek: = world, order + = study) Cosmology is the science of the origin, structure, and evolution of the universe. Cosmology is the study of the primary cosmic constituents - Harrison 1/22/09 Astronomy 309R - Spring 2009 3 The Primary Constituents Forms of substance E.g., protons, electrons, photons (i.e., the primary constituents electromagnetic radiation), dark matter , dark energy , etc. Symmetries E.g., the speed of light is the same at every place and in every direction. Dynamical principles E.g., Newtons Laws of motion. It is the task of cosmology to pursue the primary constituents to the limits of empirical understanding....
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Lecture1slides - 1/22/09 Astronomy 309R - Spring 2009 1...

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