___________ of the Milky Way contains mostly old (population II) stars and globular clusters.
A) The disk component
B) The spherical halo component
C) The hydrogen gas in the disk
D) The spiral arms
E) Sgr A*
Correct Answer:
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Q8: Who first used RR Lyrae variable stars
Q9: Good tracers of the spiral arms of
Q10: Which of the following is not a
Q11: CO observations of the galaxy reveal
A)the location
Q12: Population II stars
I.are primarily found in
Q14: Younger stars have more heavy elements because
A)old
Q15: The nuclear bulge of our galaxy
A)contains stars
Q16: The energy source at the center of
Q17: Who first determined that the energy/s emitted
Q18: Pulsating variable stars are useful in determining
A)the
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