'Missing link' supernova connects star's death to birth of black hole or neutron star 

 Astronomers have discovered a "missing link" supernova that directly connects the death of a massive star to the birth of a black hole or a neutron star.  

https://cdn.mos.cms.futurecdn.net/5cN2mvPuddHiskYfD7zepZ.png

https://www.space.com/supernova-missing-link-neutron-star-black-hole-birth