Multiple Choice
An astronomer is observing a single star (and one which does not vary) which she knows is located about 30 light-years away. What was the most likely method she or her colleagues used to obtain that distance?
A) bouncing radar beams off the star
B) measuring the star's parallax
C) the period-luminosity relationship
D) Kepler's laws
E) Hubble's law
Correct Answer:
Verified
Correct Answer:
Verified
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Q15: To get the distance to a Cepheid
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Q17: A type of star that has turned
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