Quintessence: The Mystery of Missing Mass in the Universe AUTH-4940866 Horse Anatomy and Physiology Colouring

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Quintessence: The Mystery of Missing Mass in the Universe AUTH-4940866 Horse Anatomy and Physiology ColouringWill the universe continue to expand forever, reverse its expansion and begin to contract, or reach a delicately poised state where it simply persists forever? The answer depends on the amount and properties of matter in the universe, and that has given rise to one of the great paradoxes of modern cosmology: there is too little visible matter to account for the behavior we can see. Over ninety percent of the universe consists of missing mass or dark