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The current measurements of the expansion rate of the universe are in disagreement, leading to a crisis in cosmology and the need for renewed research efforts into new physics and a new model of the universe  Questions to inspire discussion  What is the crisis in cosmology? —The crisis in cosmology refers to the disagreement between measurements of the expansion rate of the universe, leading to the need for renewed research efforts into new physics and a new model of the universe. What are the possible explanations for the discrepancy in the expansion rate of the universe? —The two possible explanations...