Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 37 - Relativity - Problems - Page 1146: 13b

Answer

The signal will take 52.26 years to reach earth as measured by clocks on earth

Work Step by Step

From the answer to 13.a, we know that earth clocks measure 26.26 years when the signal is created. Because Vega is 26.00 light years away, the signal will take 26.00 years to reach earth. Therefore the total time as measured from earth is $26.26 years+26.00 years=52.26 years$
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