A supermassive black hole will be created when our galaxy – the Milky Way – crashes into another galaxy, known as Andromeda.
Both galaxies have black holes at their centres but a direct hit will cause them to start sucking up stars – including our Sun.
Additional cosmic collisions with other galaxies will only feed the supermassive black hole.
“New supermassive black holes and more stars to the chaos”Fraser Cain
Fraser Cain, founder of Universe Today, said: "Andromeda’s black hole could be 100 million times the mass of the Sun, so it’s a bigger target for stars with a death wish."
Chaos will strike when it collides with the Milky Way's black hole – which is 4.1 million times the mass of the Sun, he added.
Cain described: "It’s in the process of tearing apart entire stars and star systems, occasionally consuming them, adding to its mass like a voracious shark.
"Over the coming billions, trillions and quadrillions of years, more and more galaxies will collide with 'Milkdromeda', bringing new supermassive black holes and more stars to the chaos."
Fortunately, Cain says the collision isn't expected to happen for another 4 billion years – just shy of the Sun's death in 5billion years.
Earth is 26,000 light-years away from the Milky Way's black hole at the moment.