Stars on the upper left of the H-R diagram are longer lived than those on the lower right.
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Q49: Massive,more luminous stars have shorter lives than
Q50: Some stars are cool enough to have
Q51: We can measure stellar parallax for most
Q52: We can measure the radii of stars
Q53: Two stars have the same luminosity.Star X
Q55: All stars spend approximately the same amount
Q56: Where do we find our star on
Q57: The apparent brightness of a star depends
Q58: If the distance between us and a
Q59: Cluster ages can be determined from
A)main sequence
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