Our galaxy is suspected to be surrounded by a galactic halo or corona because the disk of the galaxy
A) rotates faster than expected in its outer region.
B) rotates more slowly than expected in its outer region.
C) is only visible during a total eclipse of our sun.
D) is surrounded above, below, and well beyond by the brightly glowing corona.
Correct Answer:
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Q1: If the spiral density wave were the
Q6: The galactic halo or corona is believed
Q7: The first stars to form in our
Q9: Radio maps of our galaxy show spiral
Q10: Younger stars have more heavy elements because
A)
Q12: Who first used RR Lyrae variable stars
Q15: An approximately spherical cluster of over 100,000
Q17: Who first determined that the energy/s emitted
Q19: _ in other galaxies should contain luminous
Q20: The center of our galaxy lies in
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