In an expanding universe neutrinos of mass 10eV form condensates with typical mass 1016 M⊙ and size ∼0.5 Mpc. Visible matter like galaxies and stars are embedded in these and assuming a Maxwellian distribution and collisionless nature of these systems we solve the self consistent Poisson-Vlasov equations. These solutions correctly predict the profiles of luminosity of clusters of galaxies, dwarf, elliptic and spiral galaxies as well as their rotation curves; the embedding picture is supported by M∼R33 relation for astronomical systems as below.