Gaia spots a 'ghost' galaxy next door

[Binary_Bark]

An international team of astronomers, including from the University of Cambridge, discovered the massive object when trawling through data from the European Space Agency's Gaia satellite. The object, named Antlia 2 (or Ant 2), has avoided detection until now thanks to its extremely low density as well as a perfectly-chosen hiding place, behind the shroud of the Milky Way's disc. The researchers have published their results online today.

More At: https://m.phys.org/news/2018-11-gaia-ghost-galaxy-door.html