The measure of a star's brightness is called its magnitude.
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Q38: The Sun belongs to this class of
Q39: On a Hertzprung-Russell Diagram,our Sun is classified
Q40: A red giant has _.
A)a hydrogen-rich core
B)a
Q41: Which one of the objects listed below
Q42: Stars spend most of their life span
Q44: What was the test of the Big
Q45: How do astronomers believe an irregular galaxy
Q46: Based on the observed red shifts in
Q47: The largest known galaxies are _.
A)spiral
B)barred spiral
C)elliptical
D)irregular
E)round
Q48: The Sun is considered an average star.
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