Gaia Discovers

The Gaia Sausage or Gaia Enceladus is the remains of a dwarf galaxy (the Sausage Galaxy, or Gaia-Enceladus-Sausage, or Gaia-Sausage-Enceladus) that merged with the Milky Way about 8–11 billion years ago.

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Gaia Discovers a Mysterious New Type of Black Hole – And Two Are Lurking in Earth’s Cosmic Backyard

Gaia Discovers Its Second Black Hole

Gaia discovers a new family of black holes: astronomers studied the orbits of stars and noticed that some of them wobbled on the sky, as if they were gravitationally influenced by massive objects. No light could be found using telescopes, leaving only one possibility: black holes.

Gaia Discovers New Fossil Galaxy Hidden in Milky Way’s Halo