The answer is not a neutron star or black hole collision, as many astronomers have believed for a long time
Astronomers could have identified a star from outside the Milky Way
Analysis of the star’s chemical composition indicates that it could have originated from a dwarf galaxy that then merged with the Milky Way
The remains of a planet has been spotted around distant dead star
Planetary fragment identified in a disk of debris circling a dead star 400 light years away and is thought to be rich in heavy metals
How hot are the atoms in supernovae shock waves?
The nearby supernova SN1987A was the subject of X-ray analysis that has led to this discovery
Baby black holes may have forged gold and platinum
Astronomers believe that the heaviest elements were formed from the very first versions of these exotic objects