Observing the epoch of galaxy formation.
Significant observational progress in addressing the question of the origin and early evolution of galaxies has been made in the past few years, allowing for direct comparison of the epoch when most of the stars in the universe were forming to prevailing theoretical models. There is currently broad consistency between theoretical expectations and the observations, but rapid improvement in the data will provide much more critical tests of theory in the coming years.
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Palomar Observatory, California Institute of Technology, Caltech 105-24, Pasadena, CA 91125, USA.