The development of observations and laboratory experiments make it possible to explore the extreme conditions such as very high temperature high density, strong magnetic field and strong gravity, under which new physics of matters are expected or can be tested. It is believed that a strongly interacting hadrons must melt down in the form of quark and gluons above certain temperature, which has been confirmed in relativistic heavy ion collision experiments as well as from the cosmological consideration of early universe. However probing hadronic matter under high density is thus far an uncharted field of physics. In this talk a brief summary of highlights of what has been so far discussed to unravel and elucidate the mulitifacet of cold dense baryonic matter existing in the interior of the dense visible stable object in the universe, neutron stars including the newly discovered PSRJ1614-2230.