Dark Halos and Warped Disks
Galaxies are embedded within halos of dark matter, and the tilt of those halos can affect the galaxy's stellar halo and stellar disk.
Dark Matter "Wake" in the Milky Way's Outer Reaches
Astronomers have discovered that a satellite of the Milky Way has left a "wake" in the dark matter halo that surrounds our galaxy.
Less Dark Matter in Young Galaxies?
A new study of six young, star-forming galaxies suggests they have less dark matter than expected. But the results may say more about galaxy evolution than about the nature of dark matter.
Speedy Stars Weigh Milky Way’s Dark Matter Halo
It’s a bird! It’s a plane! It’s a . . . pair of hypervelocity stars? The surprising stellar duo may place constraints on the mass of our galaxy’s unseen dark matter halo.