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Intro to using Hubble's Law

Using Hubble's Law to solve for M31's velocity

Hubble's Law is a relationship between the radial velocities of distant galaxies and their distances away from us. The relationship can be stated:

v = Ho x d

where v is the recessional velocity of the galaxy, d is its distance away, and Ho is a constant. If you know the distance to M31 and the value of Ho (Hubble's constant), this relationship should give you its velocity relative to Earth, allowing you to solve the challenge question and be free of quizzes for an entire semester!

Info Click here for more information about Hubble's Law.
Data Click here to go to get the data to solve this problem using Hubble's Law.
Experiment Return to the beginnning and try another approach.

A service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Alan Smale (Director), within the Astrophysics Science Division (ASD) at NASA/GSFC

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