An astronomer would find a type Ia supernova in a distant galaxy useful as a(n) ____.
A) spiral tracer
B) gravitational lens
C) age calibration
D) rotation curve
E) standard candle

Name: An astronomer would find a type Ia supernova in a distant galaxy useful as a(n) ____. A) spiral tracer B) gravitational lens C) age calibration D) rotation curve E) standard candle
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Type Ia supernovae have a known luminosity, making them excellent standard candles for measuring distances in the universe.

An Astronomer Would Find a Type Ia Supernova in a Distant