Lecture 20: Hubble's Law

"It's cold outside, there's no sort of atmosphere, I'm all alone, more or less."

Red Dwarf Theme Music, BBC TV

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    • Date: April 13, 1995
    Reading Assignment: pp. 554-565

    Description : Hubble's law, galactic masses, cluster of galaxies, and pecular galaxies

    Objectives

  • be able to describe at least three ways to measure the mass of galaxies and clusters of galaxies
  • be able to describe Hubble's law and how it can be use for determining the distant to galaxies
  • be able to describe the steps in the Distance Ladder used to calculate the Hubble constant
  • be able to describe the large scale distribution of galaxies, including the walls, voids, and clusters
  • be able to describe interacting galaxies and peculiar galaxies