A core-collapsing self-interacting dark matter subhalo is responsible for the peculiar spur and gap features observed in GD-1, a stellar stream within...
Dubbed Shakti and Shiva, the newly-identified structures are between 12 and billion years old — so ancient they likely formed before even the oldest...
Using the 1.5 PetaFLOPS MilkyWay@home distributed supercomputer, astronomers have calculated the original mass and size of a dwarf galaxy that was shredded...
Using data from ESA’s Gaia spacecraft, astronomers have looked for the remains of ancient dwarf galaxies in the Milky Way’s halo, which surrounds the...
Named C-19, the newly-discovered stellar stream is the remnant of an ancient globular cluster and contains stars with extremely low metallicity, with a...
The Sombrero galaxy likely merged with a relatively massive galaxy several billions years ago. In a new study published in the Monthly Notices of the Royal...
The Phoenix stellar stream, a thin over-density of stars in the halo of our Milky Way Galaxy originally identified by the Dark Energy Survey, is composed...
A team of astronomers from Israel and the United States has discovered a vast stream of 250 stars of extragalactic origin in the vicinity of our Solar...
Astronomers using ESA’s Gaia satellite have discovered a large stellar stream that is currently traversing the immediate solar neighborhood at a distance...
Yale astronomers have reported the discovery of a stream of stars believed to be the remnant of an ancient star cluster slowly being ingested by our Milky...
