Web Directory

» Universe Viewer
   A software for visualization and geodetic handling of astronomical objects, in particular high-redshift structures such as quasars.
   http://home.gna.org/universeviewer/

» iCosmos Cosmology Calculator
   Enter standard cosmological parameters (such as the overall matter density, the cosmological constant, and the redshift), and this calculator will present a number of cosmological quantities (particularly the various distances), including some helpful gra
   http://icosmos.co.uk/