Astronomers know that the heavy elements that make up you and everything around you come from supernovae—thus the Carl Sagan chorus that we are made of star stuff. And they know that big enough stars can collapse into bizarre, ultra-dense neutron stars or even black holes. But that doesn’t mean they know everything about a supernova. Scientists are still figuring out what happens inside a dying star at the moment it explodes. 

Peer Into the Heart of a Supernova