Low- mass stars may become hundreds of times more luminous as giants than they were on the main sequence.
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Q9: The main reason that stars evolved off
Q10: Helium fusion requires a higher temperature than
Q11: The helium flash increases the star's luminosity.
Q12: The least massive red main- sequence stars
Q13: The helium flash stage lasts several thousand
Q15: A star system may undergo two or
Q16: As a main- sequence star, the Sun's
Q17: The helium flash shows up on the
Q18: While more massive than most of its
Q19: Our Sun should become a planetary nebula
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