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perspective
A light year can then be calculated to be about <math>3.00x10^8</math>m/s times 3600s times 24 times 365 = <B><math>9.46x10^{12}</math></B> kilometers, or <B><math>5.9x10^{12}</math></B> miles (5900 billion miles).
A light year can then be calculated to be about <math>3.00x10^8</math>m/s times 3600s times 24 times 365 = <B><math>9.46x10^{12}</math></B> kilometers, or <B><math>5.9x10^{12}</math></B> miles (5900 billion miles).
(To put this in perspective: a person would have to live 31 years, 251 days, 7 hours, 46 minutes, and 39 seconds to reach the age of '''1 billion''' seconds-old.)<ref>http://mathforum.org/library/drmath/view/58739.html</ref>
The distance in light years is equal to the time a light wave needs to cover that distance<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref> . Many objects in the universe are more than 10,000 light years away, giving rise to the [[starlight problem]].
The distance in light years is equal to the time a light wave needs to cover that distance<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref> . Many objects in the universe are more than 10,000 light years away, giving rise to the [[starlight problem]].