Spur and gap features seen in Milky Way’s GD-1 stellar stream could be caused by self-interacting dark matter subhalo ...

Physicists have proposed a solution to a long-standing puzzle surrounding the GD-1 stellar stream, one of the most well-studied ...

Using NASA's James Webb Space Telescope, scientists have observed a galaxy nearly 6.5 billion light-years from Earth, and ...

The massive, yet invisible halo of dark matter of a galaxy cluster works as a "macrolens,", while lone, unbound stars drifting through the cluster act as additional "microlenses, multiplying the ...

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 ...

The decline in orbital velocity at these distances implies that there is less dark matter in the center of our galaxy than expected. The research team describe the galaxy's halo of dark matter as ...

The mysteries of the cosmos extend far beyond the stars we see, encompassing the dark forces and unknowns that shape our ...

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 ...

The immediate consequence of this discovery was the proposition of the existence of dark matter —additional to observable matter—distributed in a halo surrounding the disks of spiral galaxies.