But is it really a galaxy? via Sputniknews: A team of astronomers using the Gaia satellite have found a "ghost" galaxy haunting the outer edges of our own. The bizarre object is three times bigger but 10,000 times fainter than the Large Magellanic Cloud (LMC), which also orbits the Milky Way. The dwarf galaxy identified as Antlia 2 evaded scientists until now because it hides behind the Milky Way's galactic disk, but that's not the only reason scientists are fascinated by "Ant 2." Either it's too big for its luminosity or it's too dim for its size, Phys.org reported. It doesn't look like a dwarf galaxy, either, being much too large, nearly one-third the size of the Milky Way, yet far dimmer than the LMC, which is three times smaller than Ant 2. "This is a ghost of a galaxy," said Gabriel Torrealba, lead author of the paper describing the discovery, which was published on November 9. "Objects as diffuse as Ant 2 have simply not been seen before. Our discovery was only possible thanks to