Cmb fluctuations - PowerPoint PPT Presentation

Salient Features of the Universe

Salient Features of the Universe. • Homogeneity and isotropy for 6000 Mpc &gt; x &gt; 100 Mpc. • Universe expanding uniformly. • thermal background of radiation with T~3K. • chemical composition is roughly 75% H, 25% He, + trace.

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Physics 133: Extragalactic Astronomy and Cosmology

Physics 133: Extragalactic Astronomy and Cosmology. Lecture 14; March 3 2014. Previously. Applications of lensing. Measure mass of galaxies, clusters planets. Test the cosmological model by measuring substructure Cosmography Test gravity Properties of dark matter. Outline:.

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