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Undo revision 1700993 by [[Special:Contributions/SamHB|SamHB]] ([[User talk:SamHB|talk]]) Why do you continue to put back what Andy takes out due to it being pseudo-scientific liberal nonsense?
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|May 7, 2007
|The speed of light ''in vacuo'' may have been significantly higher in the past than it is nowvaries.<ref>http://www.conservapedia.com/index.php?title=Essay:Quantifying_Openmindedness&oldid=147388</ref><ref>http://www.conservapedia.com/C_decay</ref>
|A far-fetched assumption underlying the [[Theory of Relativity]] is that the speed of light has never changed (in a vacuum), despite the cooling of the universe.
|"So it turns out the speed of light might not be constant after all." <ref>https://www.newscientist.com/article/dn6092-speed-of-light-may-have-changed-recently</ref><ref>http://www.extremetech.com/extreme/184879-einsteinian-error-the-25-year-old-supernova-that-could-change-the-speed-of-light-forever</ref> Research shows that due to the impossibility of a perfect vacuum the idealized concept of 'the speed of light in a vacuum' cannot be achieved in practice.
