Multiple Choice
What is the only way to measure the mass of a star accurately?
A) Measure its gravitational effect on another object.
B) Measure its spectral type and luminosity class,then use the H-R diagram.
C) It is not possible to measure the mass of a star.
D) Measure its distance using trigonometric parallax and its brightness using photometry.
Correct Answer:

Verified
Correct Answer:
Verified
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