Calculate the hubble parameter


1) What did the Astronomer Edwin Hubble discover about galaxies in the 1920's?

2) What formula is used to calculate the Hubble Parameter? Tell what each thing in the formula is.

4) Are the distances to galaxies given by Hubble's Law very accurate measurements like a spectroscope, a rough estimate like the distance to the distance to the Pleiades or something in between like the distances measured in the parallax lab?

5) Extra Credit: What else (other than the distance to far-away galaxies) can we learn from using Hubble's Law?

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