Answer: Neutron Stars
Notes: Neutron stars are remnants of supernova explosions left behind when giant stars die after they run out of fuel in their cores. The neutron star, known as PSR J0952-0607, was discovered in 2017 and is the heaviest neutron star known. Scientists have found that the heaviest neutron star ever detected is shredding its companion while spinning on its axis over 700 times per second.
