Concept explainers
Hubble's Constant Astronomers believe that the universe is expanding and that stellar objects are moving away from us at a radial velocity
a. Write
b. The equation in part a was first discovered by Edwin Hubble in 1929 and is known as Hubble's law. The constant of proportionality
c. One important feature of Hubble's constant is that scientists use it to estimate the age of the universe. The approximate relation is
Where
d. The calculation in part c would give scientists some concern, since Earth is thought to be about
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