As binary neutron stars spiral around each other to merge, their gravitational tidal forces distort each other's shape and structure, potentially revealing clues as to what lies within them.

A state of matter last seen just after the Big Bang may exist inside neutron stars — and scientists think they can prove it

Source: space
Source Link: https://www.space.com/astronomy/stars/a-state-of-matter-last-seen-just-after-the-big-bang-may-exist-inside-neutron-stars-and-scientists-think-they-can-prove-it