New data on the cosmic background radiation are making cosmologists revise their view of the Universe. The biggest surprise is that the data favour a larger amount of 'ordinary matter' than was thought.
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Hogan, C. Cosmic discord. Nature 408, 47–48 (2000). https://doi.org/10.1038/35040693
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DOI: https://doi.org/10.1038/35040693
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