a) If you were to measure the distances and recessional velocities to nearby galaxies, you would find that they don’t fall exactly on the Hubble law, with their scatter around this law being larger for the nearest galaxies. What is the reason for this scatter? Assume that you made the measurements perfectly (i.e. that you really did measure the exact distances and velocities).
a) If you were to measure the distances and recessional velocities to nearby galaxies, you would find that they don’t fall exactly on the Hubble law, with their scatter around this law being larger for the nearest galaxies. What is the reason for this scatter? Assume that you made the measurements perfectly (i.e. that you really did measure the exact distances and velocities).
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a) If you were to measure the distances and recessional velocities to nearby galaxies, you would find that they don’t fall exactly on the Hubble law, with their scatter around this law being larger for the nearest galaxies. What is the reason for this scatter?
Assume that you made the measurements perfectly (i.e. that you really did measure the exact distances and velocities).
b) At what distances do you expect the scatter from this effect to be about 10% of the velocity inferred from Hubble's law? What about 1%?
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