PSR J0737-3039 is the first known double pulsar ever discovered. Located around 3,588 light-years away in the constellation Puppis, it is the only binary neutron star system known (as of 2024) where both component stars are pulsars. Both pulsars orbit each other once every 2.45 hours and is expected to merge in a powerful kilonova event in the next 85 million years
Rendering of the orbits of both pulsars of PSR J0737-3039 as seen from the Earth's point-of-view (POV)
Depiction of one of the two pulsars of PSR J0737-3039 rotating, slowed down to 100x that of real time.