Multiple Choice
Scientists have found many stars in the outer halo that ________ the rotation of the galactic disk and have a very ________ fraction of heavy elements.
A) move in a direction opposite to; high
B) move in a direction opposite to; low
C) move in the same direction as; high
D) move in the same direction as; low
E) don't move at all with respect to; low
Correct Answer:

Verified
Correct Answer:
Verified
Q16: The dark bands pictured in the figure
Q17: In the figure below, we expect the
Q18: How do we know that at least
Q19: How do we know that globular cluster
Q20: The oldest disk stars are both _
Q22: The Milky Way Galaxy is a(n) _
Q23: The extended hot "halo" of gas surrounding
Q24: You measure the heavy element abundances and
Q25: Which of the following statements about the
Q26: Astronomers have identified examples of extraordinarily massive