Research NewsCosmology

Clusters Point to Never-Ending Universe

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Science  21 Nov 1997:
Vol. 278, Issue 5342, pp. 1402
DOI: 10.1126/science.278.5342.1402

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Until recently, the outlook for the expanding universe has varied with cosmological fashion. Now, a team of German and British researchers has simulated how the vast clusters of galaxies that bend the light of objects behind them should evolve over time in universes containing different densities of matter. They then compared the results to the number of gravitational lens images actually seen in the sky. The verdict: The simulation that best matches the observed lensing images is one that assumes a low-density, open universe.