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Tsync Tsync
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8 years ago
The period-luminosity relation is critical in finding distances with:
A) trigonometric parallaxes.
B) Cepheid variables.
C) pulsars.
D) RR Lyrae stars.
E) spectroscopic parallaxes.
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Astronomy Today

Astronomy Today


Edition: 8th
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Minoring in physics
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RatatouilleRatatouille
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8 years ago
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Tsync Author
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8 years ago
Exactly what I needed Smiling Face with Open Mouth
Minoring in physics
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8 years ago
Message back if you need anything
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