The Milky Way is part of 
A) I and III
B) I and IV
C) II and III
D) II and IV
E) just III
Correct Answer:
Verified
Q3: Gravitational lensing
A)occurs when light passes near a
Q4: _ can be used to determine the
Q5: _ have elongated nuclei with spiral structure
Q8: The look-back time is
A) the time it
Q8: The total mass of galaxies in a
Q9: Poor clusters
A)contain more than 1000 stars and
Q11: Most of the mass of a galaxy
Q14: The Hubble law is a relation between
Q15: _ are produced when two galaxies pass
Q18: A megaparsec is equivalent to
A)3.26 light-years.
B)206,265 AU.
C)the
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