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Is there a relationship between the mass of a main sequence star and its luminosity?
Q130: If the Hipparcos satellite measures the parallax
Q156: The helium flash results from the:<br>A) sudden
Q165: Why do H II regions glow?<br>A) The
Q191: Solar flares,the violent eruptive events on the
Q195: What is the typical mass of a
Q209: In carrying energy through the interior of
Q226: Rigel,the bright star in the knee of
Q255: On the Hertzsprung-Russell diagram,in which direction does
Q258: Which spectral classification signifies the coolest stellar
Q302: The main component of primary cosmic rays