News of the WeekCosmology

Galaxy Clusters Bear Witness to Universal Speed-Up

Science  21 May 2004:
Vol. 304, Issue 5674, pp. 1092
DOI: 10.1126/science.304.5674.1092b

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No matter how you measure it, the expansion of the universe is speeding up. Or so say researchers who have studied the x-rays coming from far-flung clusters of galaxies.