No one knows what dark matter is made of ... This effect can be seen most dramatically in the so-called Bullet Cluster, a ...
Dark matter is one of the great mysteries of the Universe. We don't know what it is; nor can we detect it directly. But there is, somehow, more gravity out there in the cosmos than we expect there ...
Stars within the cluster closest to the Sun have been disappearing. The European Space Agency (ESA) believes this may be due to the elusive dark matter subhalos. Scientists believe these subhalos ...