To find out more about dark matter check out our feature on it in issue 7 of All About Space, on sale now.
More Like This...
Can galaxies die?
We know that stars die, so is it possible for a galaxy to pass on too?
What happens when two galaxies collide?
Do things crash together or is it more serene?
How close to the edge of a galaxy can planets exist?
Is there such a thing as a ‘galactic habitable zone’?