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Line 9:
Line 9: − For instance, the [[Andromeda galaxy]] is 2.5 million light years from Earth, meaning that light we see from this galaxy has been traveling for two and a half million years.<ref>[http://www.solstation.com/x-objects/andromeda.htm]</ref>
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The distance in light years is equal to the time a light wave needs to cover that distance.
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>
<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>
==References==
==References==
<references/>
<references/>