Tuesday, March 1, 2016

The Formation of Our Galaxy by Professor Joseph Silk

A typical galaxy, like our Milky Way, has one hundred billion solar masses in stars. It is remarkable that one can do back-of-the-envelope estimates that lead to predictions of the characteristic mass of a galaxy. I will describe how galaxies formed. Beginning from infinitesimal fluctuations in the early universe, gravity helped concentrate the matter into clouds that fragmented into stars and assembled into galaxies. With the largest telescopes, one can look back in time and decipher the remote signatures of galactic youth and even birth. (from gresham.ac.uk)



About the Lecturer
Joseph Ivor Silk FRS was the Savilian Chair of Astronomy at the University of Oxford from 1999 to September 2011. He is currently Professor of Physics at the Institut d’Astrophysique de Paris, Université Pierre et Marie Curie, Homewood Professor of Physics and Astronomy at Johns Hopkins University (since in 2010), and Professor of Astronomy at Gresham College since 2015.

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