The Tully-Fisher relation exists between the galaxy's luminosity and its:
A)color.
B)age.
C)rotation.
D)mass.
E)size.

Name: The Tully-Fisher relation exists between the galaxy's luminosity and its: A)color. B)age. C)rotation. D)mass. E)size.
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The Tully-Fisher relation is an empirical relationship between the luminosity of a spiral galaxy and its rotational velocity. It implies that galaxies with faster rotation rates are more luminous.

The Tully-Fisher Relation Exists Between the Galaxy's Luminosity and Its