Astronomy
1st Edition
ISBN:9781938168284
Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher:Andrew Fraknoi; David Morrison; Sidney C. Wolff
Chapter25: The Milky Way Galaxy
Section: Chapter Questions
Problem 13E: The dwarf galaxy in Sagittarius is the one closest to the Milky Way, yet it was discovered only in...
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Question
The distance from the Sun to the nearest star is about 4 x 1016 m. The Milky Way galaxy (shown) is roughly a disk of diameter 1021 m and thickness ~ 1019 m. Find the order of magnitude of the number of stars in the Milky Way. Assume the distance between the Sun and our nearest neighbor is typical.
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