Reclassifying a dwarf galaxy

Ursa Major III orbits the Milky Way at a distance of 32,600 light-years. Until now, it was considered a dwarf spheroidal galaxy. Normally such a faint object wouldn’t be classified as such, but astronomers did so because of its large mass, which they assumed contains a lot of invisible dark matter. Recently, however, an internationalContinue reading “Reclassifying a dwarf galaxy”
The post Reclassifying a dwarf galaxy appeared first on Astronomy Magazine.