Luminiferous ether or light-bearing ether or simply ”ether”, which had been mentioned somehow since 17th century by Boyle, once believed to be a medium for traveling of light. Although, experiments like the Michelson and Morley could not prove its existence. In this article, we try to explain that, the experiments for detecting ether should be done in ultra-high velocities (over 5000 km/s), and that; the “cosmic microwave background”, and the special kind of universe expansion that creates the Hubble’s constant, are great proofs for the existence of ether.
Key words: Ether, cosmic microwave background, ether induced velocity limit.
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