Astronomers discover the lowest-mass double neutron star system to date

Astronomers have identified a binary neutron star system with the lowest total mass known so far. Neutron stars are ultra-dense remnants of massive stars, and some of them pulse as radio beams sweep past Earth.

• A binary neutron star system with record-low mass has been found
• Neutron stars are ultra-dense remnants of exploded massive stars
• Some are pulsars, emitting radio beams that sweep past Earth