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Q2: An astronomer would find a type Ia
Q9: The _ of the Moon's orbit is
Q11: Why are millisecond pulsars often found in
Q15: List the four laws of stellar structure.
Q18: Quasars are_.<br>A) spiral galaxies with unusually luminous
Q22: What are "forbidden lines"? Briefly describe how
Q30: Groombridge 34 i s an M2 main
Q34: Large molecular clouds will form into protostars
Q37: The magnetic polarities of sunspots _ at
Q42: Stars, like our Sun, generate their energy