Describing matter under extreme conditions, such as those found inside neutron stars, remains an unsolved problem. The density of such matter is equivalent to compressing around 100,000 Eiffel Towers ...

Theoretical physicists have studied color superconductivity for more than two decades. However, this study’s connection to neutron star observations is the first ever empirical limit on the pairing ...

At extremely high densities, quarks are expected to form pairs, as electrons do in a superconductor. This high-density quark behavior is called color superconductivity. The strength of pairing inside ...