Chapter 26
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How did Edwin Hubble establish that there are other galaxies, quite removed from the Milky Way Galaxy?
by observing a Cepheid variable in a nearby galaxy and using it to get the distance
Edwin Hubble developed a classification scheme for galaxies. By what characteristic did he classify galaxies?
their shape
Why is the use of Hubble's Law to measure distances to galaxies so important to astronomers?
Most galaxies are so far away, the only way to get distances to them is to use Hubble's Law
Which of the following objects is considered useful to astronomers as a "standard bulb" for determining distances?
type Ia supernovae
