Why Do We Believe That Starburst Galaxies Represent a Temporary

question 135

Multiple Choice

Why do we believe that starburst galaxies represent a temporary stage in galaxy evolution?

• A)We don't see any nearby starburst galaxies.
• B)We observe starbursts to last only a few years at a time.
• C)Such galaxies form stars at such a high rate that they would have consumed all their gas long ago if they had always been forming stars at this high rate.
• D)All starburst galaxies look like normal spiral galaxies, aside from the starbursts.

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