Scientists are keen to get to the bottom of the dark matter puzzle because this phenomenon accounts for the vast majority of the "stuff" in the universe — about 85%, in fact. That means everything we ...

Scientists have found dark matter dominating the halos of two supermassive black holes 13 billion light years away.

This puzzling result makes sense if one assumes that the boundary stars are feeling the gravitational effects of an unseen mass—dark matter—in a halo around the galaxy. Dark matter could also ...

Xingyu Zhang et al, The GD-1 Stellar Stream Perturber as a Core-collapsed Self-interacting Dark Matter Halo, The Astrophysical Journal Letters (2025). DOI: 10.3847/2041-8213/ada02b Journal ...

Think of its second V-shape as an arrow ... high stellar densities of the disk and the bulge, but the halo is dominated by dark matter and actually contains most of the mass of the galaxy.” ...

Another possibility is that dark matter is not WIMPs, but MACHOs. These Massive Astrophysical Compact Halo Objects are large bodies made of ordinary matter put together in unexpected ways that ...