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killian killian
wrote...
Silver Member
Posts: 6024
10 years ago
What makes white-dwarf supernovae very good standard candles for distance measurements?
A) They are very bright, so they can be used to determine the distances to galaxies billions of light-years away.
B) They should all have approximately the same luminosity.
C) They occur so frequently that we can use them to measure the distances to virtually all galaxies.
D) We have had several occur close to us in the Milky Way, so we have been able to determine their luminosities very accurately.
E) both A and B
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padrepadre
wrote...
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Educator
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Posts: 21610
10 years ago
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killian Author
wrote...
Silver Member
10 years ago
Thanks sir
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