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The reason type ia supernovae are useful to astronomers for determining distances to other galaxies is that?
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26 votes
The reason type ia supernovae are useful to astronomers for determining distances to other galaxies is that?

User Pietro Nadalini
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14 votes

Answer:

Because these supernovae are formed by white dwarfs that explode when they reach a uniform accreted mass, the supernova peak luminosity is thought to be very consistant. This consistancy allows these supernovae to be used as standard candles to measure distances.

User Wrangler
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