What causes stars and gas clouds to orbit around the center of the Galaxy? a) Spiral density waves. b) The force of gravity. c) This is natural motion in a disk.
What causes stars and gas clouds to orbit around the center of the Galaxy? a) Spiral density waves. b) The force of gravity. c) This is natural motion in a disk.
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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What causes stars and gas clouds to orbit around the center of the Galaxy?
a) Spiral density waves.
b) The force of gravity.
c) This is natural motion in a disk.
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