Roughly what percentage of stars in our galaxy are main-sequence stars?
A) 10 percent
B) 25 percent
C) 50 percent
D) 75 percent
E) 90 percent
Correct Answer:
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Q43: For which type of binary system are
Q44: On a typical H-R diagram, where are
Q45: A star's position in the H-R diagram
Q46: Binary star systems are extremely useful in
Q47: Astronomers can measure the speed of the
Q49: The figure below shows an H-R diagram,
Q50: You discover a binary star system in
Q51: Star X and star Y are 5
Q52: Main-sequence stars range in mass from approximately
A)
Q53: Eclipsing binary systems
A) orbit in the plane
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