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The star zeta Pegasi (in the constellation Pegasus, the Flying Horse) has a spectral-luminosity ...

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The star zeta Pegasi (in the constellation Pegasus, the Flying Horse) has a spectral-luminosity ...

The star zeta Pegasi (in the constellation Pegasus, the Flying Horse) has a spectral-luminosity class of B8 V, which gives it a surface temperature of about 11,000 K. According to Table 12-1 of Comins and Kaufmann, Discovering the Universe, 7th Ed., the expected main-sequence lifetime of zeta Pegasi is
A)   much greater than 500 million years.
B)   about 500 million years.
C)   not defined in any way at all by this information.
D)   about 500,000 years.

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Discovering the Universe

Edition: 7^th

Authors: Kaufmann, Comins

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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein

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