Abstract
Over the last decade and a half, significant advances have been made in our understanding of the “structure” of the nearby universe. These have come both from redshift surveys of galaxies and clusters of galaxies and from the comparison of such data to theoretical models of how such structures might have arisen. We present recent results from several of the redshift surveys currently being undertaken at the CfA, and compare the data, including data on galaxy clusters, with the predictions of various cosmological simulations of structure and cluster formation. At present, the observational data on large scale structure are not well described by any of the simple models of structure formation, our understanding of large-scale flows is getting better but is still terribly incomplete, and the best dynamical estimates of Ω are still well below unity.
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