摘要: Until recently the properties of nuclear matter at high densities ϱ > 0 = 0.15 fm-3 and/or temperatures T B 16 MeV have been inaccessible for study experimentally. This is because normal nuclei saturate one density, ≈ 0, with a unique volume energy per nucleon, —B 0. In past, studied either elementary probes such as electrons, pions, and protons, or low-energy probes. Such probes, however, cannot compress entire nor heat them up to Thus, these unable shed light on this aspect matter. nature gravity can crush in hearts neutron stars. Also, supernova collapse may involve before exploding. However, it clear that dense are very difficult extract from limited observations objects.