Multiple Choice
Why can Type Ia supernovae be used to determine a galaxy's distance?
A) Type Ia supernovae occur only in very luminous galaxies.
B) Type Ia supernova have approximately the same luminosity.
C) Type Ia supernovae have approximately the same size.
D) A Type Ia supernova occurs in a typical galaxy about once every 100 years.
Correct Answer:

Verified
Correct Answer:
Verified
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