Fundamentals of Physics Extended (10th Edition)

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

Chapter 33 - Electromagnetic Waves - Problems - Page 1006: 71d

Answer

5446 B.C.

Work Step by Step

A light-year is the distance light travels in a year. Therefore, it take 6500 years for light to travel 6500 light years. This means that the true time of the supernova was 6500 years before 1054 A.D., or 5446 B.C.
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