The Location of the Galactic Center Was First Found by Harlow

question 102

Multiple Choice

The location of the Galactic Center was first found by Harlow Shapley with

• A) radio emissions from Sagittarius A.
• B) planetary nebulae in the open clusters.
• C) infrared observations of the heat from its accretion disk around the black hole.
• D) RR Lyrae variables in the globular clusters.
• E) Cepheids of population I in the spiral arms.

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