Suppose You Want to Know the Distance to a Particular

question 10

Multiple Choice

Suppose you want to know the distance to a particular galaxy.What's the biggest problem with using type 1a supernovae to measure the distance?

• A)Supernovae are extremely luminous and can outshine their galaxies.
• B)Supernovae all have about the same luminosity.
• C)Because supernovae are very energetic, they are not well understood.
• D)Supernovae are rare, so you might have to wait a long time.

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