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The Radial-Velocity Method
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Astronomy
AST.258 The Radial-Velocity Method
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In a radial-velocity observation of an exoplanet system, which light is usually being analyzed?
A
The star's light, because the planet's gravity shifts the star's spectral lines.
B
Only light from a spacecraft orbiting the planet.
C
Only radio light produced by life on the planet.
D
Only the planet's reflected light, because the star's spectrum is ignored.
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