Why Can Type Ia Supernovae Be Used to Determine a Galaxy's

question 19

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.

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