Conflict over the age of the Universe

M. Bolte & C. J. Hogan

Lick Observatory, University of California, Santa Cruz, California 95064, USA.
Astronomy and Physics Department, University of Washington, Seattle, Washington 98195, USA.

The ages of the oldest stars in our Galaxy can be estimated by comparing stellar populations in globular clusters to calibrated stellar models. The best data give cluster ages of about 15.8 2.1 Gyr, which conflicts with the age of the Universe estimated from measurements of the Nubble constant and the 'standard' cosmological model of a flat, matter-dominated universe (8–13 Gyr).

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