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Q3: The core of the Sun is<br>A)at the
Q5: Since all stars begin their lives with
Q23: The Sun's average surface (photosphere)temperature is about<br>A)1,000,000
Q24: Why do we think the first generation
Q33: Most nearby stars move relative to the
Q33: What is the average temperature of the
Q41: What kinds of objects lie in the
Q67: Which of the following terms is given
Q69: To estimate the central temperature of the
Q80: When we see a meteor shower,it means