An Astronomer Observes Two Type Ia Supernovas in Different Galaxies

question 1

Multiple Choice

An astronomer observes two Type Ia supernovas in different galaxies.The first is in a galaxy 100 Mpc away.If the second supernova is 10⁶ times fainter than the first but has an identical light curve,how far away is the second supernova's host galaxy?

• A) 10³ Mpc
• B) 10⁸ Mpc
• C) 10⁶ Mpc
• D) 10⁵ Mpc

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