| − | The distance light travels in one year ''in vacuo''.<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref> 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 over two and a half million years.<ref>[http://www.solstation.com/x-objects/andromeda.htm]</ref> | + | The distance light travels in one year ''in vacuo''.<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref> |