Now you look at the spectrum of the central bulge of this galaxy. The same spect
ID: 1651614 • Letter: N
Question
Now you look at the spectrum of the central bulge of this galaxy. The same spectral line is there, but even before you do the measurement you know what will you find, do you?
A. The central bulge of this galaxy is moving towards us with the speed of 2% of the speed of light
B. The central bulge of this galaxy is moving away from us with the speed of 2% of the speed of light
C. The central bulge of this galaxy is at rest relative to us
D. It is not possible to make any conclusion about the speed of this galaxy or any of its parts
Explanation / Answer
Option (C) The central bulge of this galaxy is at rest relative to us, is the correct answer.
Explanation:
The central bulge contains many red giants and red super giants stars and so the central bulge does not have active star formation going on. This central bulge travels with constant velocity along with our planet in the milky way. So, they appear to be at rest relative to us.
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