Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 30 - Think and Explain: 42

Answer

Light from the receding star shows a Doppler shift.

Work Step by Step

The Doppler effect causes the spectral lines emitted by receding stars to be shifted to lower frequencies and longer wavelengths ("red-shifted"). This is discussed on page 569.
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