The Ursa Minor Dwarf is a small galaxy, a loose aggregation of stars, and a satellite of the Milky Way. Its gravitational center lies 200,000 light-years away, and it seems to have undergone a ...

The nearby Ursa Minor dwarf spheroidal (UMi dSph) is one of the most dark matter dominated galaxies known, with a central mass to light ratio roughly equal to 70.

The stars of a possible ultra-faint dwarf galaxy, known as UMa3/U1, could be held in place by the gravitational glue of dark matter. ... in this case Ursa Major, the Great Bear.

UFDs are dominated by dark matter. The mass of the Milky Way, for example, is about 85% dark matter. An ultrafaint dwarf galaxy, however, can have a thousand times more dark matter than luminous ...

The Draco dwarf is a faint, star-poor but dark-matter rich galaxy. Here we see Hubble zooming in on some of its stars. (Image credit: NASA/ESA/Eduardo Vitral, Roeland van der Marel, Sangmo Tony ...

A new satellite galaxy discovered orbiting the Milky Way is either an incredibly ancient, soon-to-fragment clump of stars or the most dark-matter-dominated dwarf galaxy ever found.

The Ursa Minor Dwarf is a small galaxy, a loose aggregation of stars, and a satellite of the Milky Way. Its gravitational center lies 200,000 light-years away, ...