> Dr Thomas Kitching, a co-author of the study from University College London, said ... "It's too early to say if this is a dark matter effect, or caused by nor

> Dr Thomas Kitching, a co-author of the study from University College London, said ... "It's too early to say if this is a dark matter effect, or caused by normal astrophysical processes. What we need to do now, is make simulations of these collisions to distinguish these possibilities."