Foundations of Astronomy, Enhanced
Foundations of Astronomy, Enhanced
13th Edition
ISBN: 9781305980686
Author: Michael A. Seeds; Dana Backman
Publisher: Cengage Learning US
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Chapter 16, Problem 1RQ
To determine

Whether E0 galaxy appears to have a “Milky Way” band of star light for someone on a planet in the same galaxy.

Expert Solution & Answer
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Answer to Problem 1RQ

No. E0 galaxy does not appear to have a “Milky Way” band of star light.

Explanation of Solution

Milky Way galaxy is almost disk shaped. Thus, when seen from within it appears like a band of star light.

The two-dimensional representation of E0 galaxies seems almost circular but their actual shape inferred from the radial motion of the galaxies is likely to be spherical, true, flattened or elongated.

Because of the spherical nature of the E0 galaxy, when someone habituated on an exoplanet in that galaxy looks at it, they will see stars scattered all over the sky rather than a band of stars.

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