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Milky Way Rotation and Dark Matter
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Astronomy
AST.218 Milky Way Rotation and Dark Matter
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Which phrase best describes the gravitational-field pattern implied by a flat outer Milky Way rotation curve?
A
Gravity depends only on how bright a star appears from Earth.
B
Gravity ends at the visible edge of the disk.
C
Gravity is stronger at large radii than visible matter alone would predict.
D
Gravity pushes stars outward faster than it pulls inward.
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