The main goal of the Skies and Universes website is to provide access for the astronomical community to results of cosmological simulations. These results are useful on their own to understand processes related with the non-linear evolution of cosmic structures. Some results are specifically focused on observational projects. To facilitate the interaction between the theory and observations we provide links to recent observational projects and to some their results and publications.
There are other databases and websites that provide access to results of simulations. Links to many of them can be found here.

Specifics of our portal is to provide raw data of simulations. For example, one can find here coordinates and velocities of simulations with billions of particles. We also provide halo catalogs, light-cones for mock galaxy samples, power spectra for many thousands realizations of n-nody simulations.

Unlike the CosmoSim.org and Millennium database, we do not support SQL queries. Users of Skies & Universes are expected to download data and write their own routines to analyze the data. We do not provide computing facilities to do the analysis. Care should be taken when downloading data. Do not download many files at a time. Wait until the previous file retrieval finishes before you start the new one. Depending on the speed of connection it may take hours to download a single file.