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Tsync Tsync
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Posts: 3450
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8 years ago
The location of the Galactic Center was first found by Harlow Shapley with:
A) infrared observations of the heat from its accretion disk around the black hole.
B) Cepheids of Population I in the spiral arms.
C) planetary nebulae in the open clusters.
D) RR Lyrae variables in the globular clusters.
E) radio emissions from Sagittarius A.
Textbook 
Astronomy Today

Astronomy Today


Edition: 8th
Authors:
Read 180 times
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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
wrote...
8 years ago
Exactly what I needed Smiling Face with Open Mouth
Minoring in physics
wrote...
8 years ago
Cool Smiling Face with Open Mouth
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