The Milky Way is one of myriad
A) solar systems.
B) galaxies.
C) planets.
D) stars.
Correct Answer:
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Q27: In determining the distance to a galaxy
Q28: To an astronomer,what is a "standard candle"?
A)
Q29: Why are we able to see only
Q30: The Milky Way,in which the Sun resides,is
Q32: The significant feature of a Cepheid variable
Q35: Interstellar dust obscures our view of distant
Q36: When distances were carefully measured from Earth
Q37: What is the basic shape of a
Q38: Cepheid stars are useful to astronomers as
Q39: What does a spiral galaxy look like
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