Alan Guth, The Kinematics of the Homogeneous Expanding Universe 8.286 Lecture 4, September 17, 2013, p. 1. Hubble's Law v = Hr . Here v ≡ recession velocity , H ≡ Hubble’s constant , and r ≡ distance to galaxy . Alan Guth Massachusetts Institute of Technology 8.286 Lecture 4, September 17, 2013 –1– The Parsec © Source unknown. All rights reserved. This content is excluded from our Creative Commons license. For more information, see http://ocw.mit.edu/fairuse. Alan Guth Massachusetts Institute of Technology 8.286 Lecture 4, September 17, 2013 –2– –3– Alan Guth, The Kinematics of the Homogeneous Expanding Universe 8.286 Lecture 4, September 17, 2013, p. 2. Photo courtesy Observatories of the Carnegie Institution of Washington. Alan Guth –4– –6– Massachusetts Institute of Technology 8.286 Lecture 4, September 17, 2013 –5– –7– MIT OpenCourseWare http://ocw.mit.edu 8.286 The Early Universe Fall 2013 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms.