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Science 7 March 2003:
Vol. 299. no. 5612, pp. 1532 - 1533
DOI: 10.1126/science.1082158
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Perspectives

ASTROPHYSICS:
Precision Cosmology? Not Just Yet . . .

Sarah L. Bridle, Ofer Lahav, Jeremiah P. Ostriker, Paul J. Steinhardt

The recent announcement from the Wilkinson Microwave Anisotropy Probe (WMAP) satellite experiment combined with other recent advances in observational cosmology verifies key components of the standard cosmological model. However, Bridle et al. argue in their Perspective that there remain some significant open issues regarding the basic history and composition of the Universe and uncertainties in some of the most important parameters.

S. L. Bridle, O. Lahav, and J. P. Ostriker are at the Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, UK. E-mail: sarah{at}ast.cam.ac.uk P. J. Steinhardt is in the Department of Physics, Princeton University, Princeton, NJ 08544, USA.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)