Durham University scientists studied a 'clump ' of dark matter . It was found to lag behind the galaxy it was associated with . This suggests dark matter particles can self-interact and slow down . Comment: The universe is expanding, but not as fast as we thought.
Durham University scientists studied a 'clump ' of dark matter . It was found to lag behind the galaxy it was associated with . This suggests dark matter particles can self-interact and slow down . It means dark matter may not be as oblivious to our universe as we thought .