8.286 Lecture 4September 17, 2018

THE KINEMATICS

of the

HOMOGENEOUS EXPANDING

UNIVERSE

Hubble's Law

v = Hr :

Here

v � recession velocity ;

H � Hubble expansion rate ;

and

r � distance to galaxy :

Alan Guth

Massachusetts Institute of Technology

8.286 Lecture 4, September 17, 2018 {1{

The Parsec

Alan Guth

Massachusetts Institute of Technology

8.286 Lecture 4, September 17, 2018 {2{

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Hubble's Original Data

Alan Guth

Massachusetts Institute of Technology

8.286 Lecture 4, September 17, 2018 {5{

Hubble-Humason Data, 1931

Alan Guth

Massachusetts Institute of Technology

8.286 Lecture 4, September 17, 2018 {6{

Supernovae 1a, 2002

Alan Guth

Massachusetts Institute of Technology

8.286 Lecture 4, September 17, 2018 {7{

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