Runaway Stars Die Lonely Deaths in Cosmic No Man's Land
When runaway stars are flung from their host galaxies and lost to intergalactic space, what happens next? Well, they get old, run out of fuel and, if they are massive enough, explode as a supernova — as would be expected for any regular massive star.
3 stars, banished from their galaxies, explode in deep space
'Exiled' stars explode 'far' from home
Hubble Confirms Two Solitary Supernovae