New research has uncovered the presence of at least thirteen ‘wandering’ black holes in dwarf galaxies. Something, that until recently was not believed possible.
A collision between our galaxy - the Milky Way - and another 2 -3 billion years ago could have been the cause of the creation of more than half the stars in the galactic disc.
Galactic mergers were extremely common billions of years ago and have shaped the Universe as we know it. But not all of these unions are long-lived. For some galaxies, such a union will force them to wither and die.